Display warning on too big photo files
Add icons for partially successful upload
Implement #182 and #188
Implement finding surveys for device from IMEI
Remember device IMEI for incoming data
Handle case when bitmap used to shrink image has bad size
Complete #188
Merge branch 'feature/photo_size_limits' into develop

Conflicts:
	WFPMapping/device/survey/res/drawable-mdpi/checkmark_asterisk.png
	WFPMapping/device/survey/res/drawable-mdpi/checkmark_exclam.png
Merge branch 'feature/imei' into develop
Merge branch 'develop' of https://github.com/akvo/akvo-flow into feature/report-service
Adds license header