Merge pull request #408 from AndyScherzinger/master

2.5.0 Changelog Japanese
Merge pull request #409 from AndyScherzinger/master

Spanish Changelog
check for null (ContentValues.put() doesn't handle null)
Merge pull request #411 from nelenkov/dev

check for null (ContentValues.put() doesn't handle null), see #392
Merge branch 'dev' of https://github.com/AndlyticsProject/andlytics