Design changes.

Better adherence to the AOSP / Android design guidelines:
* moved settings to the drop-down menu only
* reorganized action bar with the most common actions first

New icon for upload observations.
Update Hebrew Translation
Merge pull request #453 from arthurzam/master

Update Hebrew Translation (@arthurzam)
Merge pull request #452 from tamcap/redesign

Redesign menu UI (@tamcap)
Update strings.xml

Minor correction on Dutch translations.
Merge pull request #455 from martiensch/patch-1

Update Dutch translation (@martiensch)
Fix Typos
Bokmål translation
Merge pull request #457 from sigurdga/master

Add Bokmål (Norwegian) translation (@sigurdga)
Merge pull request #456 from aniruddha-adhikary/master

Update bn-BD translation (@aniruddha-adhikary)