diff --git a/.hgignore b/.hgignore
index 355fe26..de87afc 100644
--- a/.hgignore
+++ b/.hgignore
@@ -34,6 +34,9 @@ android/obj
 android/.gradle
 android/external/*.git
 android/assets
+android/local.properties
+android/gradle.properties
+android/pEpJNIAdapter.iml
 
 syntax: regexp
 android/external/[^.]*
diff --git a/android/local.properties b/android/local.properties
deleted file mode 100644
index 4c99279..0000000
--- a/android/local.properties
+++ /dev/null
@@ -1,7 +0,0 @@
-## This file must *NOT* be checked into Version Control Systems,
-# as it contains information specific to your local configuration.
-#
-# Location of the SDK. This is only used by Gradle.
-#
-#Wed Apr 15 10:58:28 EDT 2015
-sdk.dir=/home/dietz/projekte/android/android-sdk-linux
diff --git a/android/pEpJNIAdapter.iml b/android/pEpJNIAdapter.iml
deleted file mode 100644
index 7d8e587..0000000
--- a/android/pEpJNIAdapter.iml
+++ /dev/null
@@ -1,91 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<module external.linked.project.id=":pEpJNIAdapter" external.linked.project.path="$MODULE_DIR$" external.root.project.path="$MODULE_DIR$/../../k9mail-pEp" external.system.id="GRADLE" external.system.module.group="k9mail-pEp" external.system.module.version="unspecified" type="JAVA_MODULE" version="4">
-  <component name="FacetManager">
-    <facet type="android-gradle" name="Android-Gradle">
-      <configuration>
-        <option name="GRADLE_PROJECT_PATH" value=":pEpJNIAdapter" />
-      </configuration>
-    </facet>
-    <facet type="android" name="Android">
-      <configuration>
-        <option name="SELECTED_BUILD_VARIANT" value="debug" />
-        <option name="SELECTED_TEST_ARTIFACT" value="_android_test_" />
-        <option name="ASSEMBLE_TASK_NAME" value="assembleDebug" />
-        <option name="COMPILE_JAVA_TASK_NAME" value="compileDebugSources" />
-        <option name="ASSEMBLE_TEST_TASK_NAME" value="assembleDebugAndroidTest" />
-        <option name="COMPILE_JAVA_TEST_TASK_NAME" value="compileDebugAndroidTestSources" />
-        <afterSyncTasks>
-          <task>generateDebugAndroidTestSources</task>
-          <task>generateDebugSources</task>
-        </afterSyncTasks>
-        <option name="ALLOW_USER_CONFIGURATION" value="false" />
-        <option name="RES_FOLDER_RELATIVE_PATH" value="/src/main/res" />
-        <option name="RES_FOLDERS_RELATIVE_PATH" value="" />
-        <option name="LIBRARY_PROJECT" value="true" />
-      </configuration>
-    </facet>
-  </component>
-  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_7" inherit-compiler-output="false">
-    <output url="file://$MODULE_DIR$/build/intermediates/classes/debug" />
-    <output-test url="file://$MODULE_DIR$/build/intermediates/classes/androidTest/debug" />
-    <exclude-output />
-    <content url="file://$MODULE_DIR$">
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/r/debug" isTestSource="false" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/aidl/debug" isTestSource="false" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/buildConfig/debug" isTestSource="false" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/rs/debug" isTestSource="false" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/res/rs/debug" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/res/generated/debug" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/r/androidTest/debug" isTestSource="true" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/aidl/androidTest/debug" isTestSource="true" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/buildConfig/androidTest/debug" isTestSource="true" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/rs/androidTest/debug" isTestSource="true" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/res/rs/androidTest/debug" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/res/generated/androidTest/debug" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/res" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/resources" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/assets" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/aidl" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/java" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/jni" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/debug/rs" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/main/res" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/main/resources" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/assets" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/external/assets" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/main/aidl" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/main/rs" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/res" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/resources" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/assets" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/aidl" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/java" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/jni" isTestSource="true" />
-      <sourceFolder url="file://$MODULE_DIR$/src/androidTest/rs" isTestSource="true" />
-      <excludeFolder url="file://$MODULE_DIR$/build/cyrus-sasl-android-1" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/assets" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/bundles" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/classes" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/dependency-cache" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/incremental" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/lint" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/manifests" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/res" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/resources" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/rs" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/symbols" />
-      <excludeFolder url="file://$MODULE_DIR$/build/libetpan-android-1" />
-      <excludeFolder url="file://$MODULE_DIR$/build/openssl-android-1" />
-      <excludeFolder url="file://$MODULE_DIR$/build/outputs" />
-      <excludeFolder url="file://$MODULE_DIR$/build/pEpEngine-android-1" />
-      <excludeFolder url="file://$MODULE_DIR$/build/tmp" />
-    </content>
-    <content url="file://$MODULE_DIR$/../src">
-      <sourceFolder url="file://$MODULE_DIR$/../src" isTestSource="false" />
-    </content>
-    <orderEntry type="jdk" jdkName="Android API 21 Platform" jdkType="Android SDK" />
-    <orderEntry type="sourceFolder" forTests="false" />
-    <orderEntry type="library" exported="" name="commons-io-2.4" level="project" />
-  </component>
-</module>
\ No newline at end of file