fixed creating certificates.zip when target zip did not include the directory certificates, so they were bein unpacked into datadir. Added entryCompression ZipEntryCompression.STORED since final APK is being compressed as well. Put all custom tasks under android plugin definitions

android/build.gradle

@@ -8,11 +8,6 @@ buildscript {
         }
 }
 
-task clean(type: Delete,overwrite: true) {
-    delete 'build'
-    delete 'assets'
-}
-
 apply plugin: 'com.android.application'
 
 android {
@@ -23,7 +18,7 @@ android {
         targetSdkVersion 25
         minSdkVersion 14
         versionCode 1
-        versionName "2.17.2c"
+        versionName "2.17.2e"
     }
     sourceSets {
         main {
@@ -51,10 +46,17 @@ android {
     }
 }
 
-task zipCerts(type: Zip) {
+task zipCerts(type:Zip) {
-    archiveName 'certificates.zip'
+    from (files('../contrib/'))
+    include 'certificates/**/*.crt'
     destinationDir file('assets')
-    from (files('../contrib/certificates'))
+    archiveName 'certificates.zip'
+    entryCompression ZipEntryCompression.STORED
 }
-
 preBuild.dependsOn zipCerts
+
+task clean(type: Delete,overwrite: true) {
+    delete 'build'
+    delete 'assets'
+}
+

android/gradle.properties

@@ -0,0 +1 @@
+org.gradle.jvmargs=-Xmx2048m -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8