Update lib version

Signed-off-by: Mario Danic <mario@lovelyhq.com>

build.gradle

@@ -179,7 +179,7 @@ dependencies {
     compile name: 'touch-image-view'
     compile 'com.android.support:multidex:1.0.1'
 
-    compile 'com.github.nextcloud:android-library:1.0.19'
+    compile 'com.github.nextcloud:android-library:1.0.20'
     compile "com.android.support:support-v4:${supportLibraryVersion}"
     compile "com.android.support:design:${supportLibraryVersion}"
     compile 'com.jakewharton:disklrucache:2.0.2'