revert to 2.0.17

Author: MohammadMQ

.gitignore

@@ -5,3 +5,11 @@
 .DS_Store
 /build
 /captures
+/.idea/caches/build_file_checksums.ser
+/.idea/caches/gradle_models.ser
+/.idea/codeStyles/Project.xml
+/.vs/android-webui-sdk/v16/.suo
+/.vs/slnx.sqlite
+/.vs/VSWorkspaceState.json
+/private_key_sender.asc
+/public_key_sender.asc