Updated .gitignore

Refs #192

https://intellij-support.jetbrains.com/hc/en-us/articles/206544839-How-to-manage-projects-under-Version-Control-Systems

.gitignore

@@ -1,27 +1,21 @@
 *.iml
-.gradle
-/local.properties
-/.idea/caches
-/.idea/dictionaries
-/.idea/libraries
-/.idea/assetWizardSettings.xml
-/.idea/gradle.xml
-/.idea/modules.xml
-/.idea/tasks.xml
-/.idea/workspace.xml
-/.idea/misc.xml
-/.idea/vcs.xml
-/.idea/encodings.xml
-/.idea/crowdin_settings.xml
-.DS_Store
-/build
-/captures
-.externalNativeBuild
-/app/full
-/app/play_beta
-/app/play_release
-/tools/config.sh
-crowdin.properties
+tools/config.sh
+local.properties
 keystore.properties
-/app/src/debug/res/xml/providers.xml
-/app/.cxx/
+crowdin.properties
+.gradle
+.idea/caches
+.idea/dictionaries
+.idea/libraries
+.idea/crowdin_settings.xml
+.idea/encodings.xml
+.idea/assetWizardSettings.xml
+.idea/gradle.xml
+.idea/misc.xml
+.idea/modules.xml
+.idea/tasks.xml
+.idea/vcs.xml
+.idea/workspace.xml
+app/.cxx/
+build
+captures