Merge branch '1334-disable-resource-shrinking' into 'master'

Disable resource shrinking for release builds

Closes #1334

See merge request briar/briar!854

briar-android/build.gradle

@@ -261,7 +261,7 @@ android {
 			proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
 		}
 		release {
-			shrinkResources true
+			shrinkResources false
 			minifyEnabled true
 			crunchPngs false
 			proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'