Added first support for API version 20 (Android L) to APL
Merge branch 'hotfix/2.15.13' of https://bitbucket.org/shouldit/android-proxy into hotfix/2.15.13
Merge remote-tracking branch 'private/hotfix/2.15.13' into hotfix/2.15.14

* private/hotfix/2.15.13:
  Added first support for API version 20 (Android L) to APL
Fixed get proxy country code
Added isValidProxyConfiguration() check to getProxy method
Merge branch 'master' into hotfix/2.15.14

* master:
  Added debug message for airplane mode
  Added tracking to fragments and dialogs Added preliminary check when device is into airlplane mode
Upgrade to latest version of play-services
Trying out Google Analytics as tracker for handled exception
Fixed visibility issue adding emptysection to standard_list layout
Added string for airplane mode explanation
Added Crashlytics support
Improved Crashlytics support