Merge pull request #305 from AndlyticsProject/dev

Dev-->Master - Release 2.4.0
Merge pull request #307 from AndlyticsProject/dev

updated header image
fixed typo
Merge branch 'dev'
Merge branch 'dev'
Fixed comment parsing, need to check developer replies though. Fixes #358
Updated version for fix release
Added back missing device model. Refs #358
Updated in app change log
Merge branch 'master' into dev
Merge branch 'dev' of https://github.com/AndlyticsProject/andlytics into checkout-integration