Improve gitignore even with newer Android Studio

.gitignore

@@ -38,23 +38,8 @@ captures/
 
 # IntelliJ
 *.iml
-.idea/workspace.xml
-.idea/tasks.xml
-.idea/gradle.xml
-.idea/assetWizardSettings.xml
-.idea/dictionaries
-.idea/libraries
-.idea/jarRepositories.xml
-.idea/runConfigurations.xml
-.idea/.gitignore
-.idea/compiler.xml
-.idea/misc.xml
-.idea/.name
-# Android Studio 3 in .gitignore file.
-.idea/caches
-.idea/modules.xml
-# Comment next line if keeping position of elements in Navigation Editor is relevant for you
-.idea/navEditor.xml
+.idea/*
+!idea/codeStyles
 
 # Keystore files
 # Uncomment the following lines if you do not want to check your keystore files in.