Update strings.xml
Merge pull request #211 from kruks23/development

Rounded minutes ago and last seen moe exactly
cleanup; removed unnecessary imports and log outputs
code cleanup / unification
added share image intent to android manifest for testing purposes
fixed bug in intent filter. cleaned share with activity
streamlined onpresenceselected listener
clear input field after conference pgp message
Update strings.xml
not working version of otr file transfer
fixes for otr file transfer
Merge branch 'development' of https://github.com/beriain/Conversations into beriain-development

Conflicts:
	res/values-eu/strings.xml
Merge branch 'beriain-development' into development
removed duplicate entries
establish otr connection before sending image
moved message packet creation into sperate class
fixed #220
changelog and version bump to 0.4-beta
removed warnings
enabled otr encryption for ibb filetransfer as well