[SDK] [Android] Release v1.2.2.2

GitHub release
Integration guide

Changelog:

• Better track click for manually displayed data notification
• Fix silent NPE for manually displayed data notification in some cases
• Fix keyboard not shown inside webviews
• Update gradle to 2.14.1
• Update gradle build tools to 2.1.3
• Update Android SDK version to 24
• Update Android build tools to 24.0.2
• Update support-v4 to 24.2.0
• Update play-services-gcm to 9.4.0