fixed #403
rotate avatars

Conflicts:
	src/eu/siacs/conversations/persistance/FileBackend.java
fixed #406
fixed pgp signature creation
more openpgp bug fixes
set openpgp-api-lib to a version that actually works
added missing breaks oO
made shareing text with conferences possible again
MUC: set the password from bookmarks.
Merge pull request #424 from betheg/bookmark_password

MUC: set the password from bookmarks.
trying to avoid rejectedexection
deleted some unused string-resources and imports, also deleted edit_account_dialog.xml.
fixed #425
Merge pull request #426 from betheg/remove_strings

deleted some unused string-resources and imports, also deleted edit_account_dialog.xml.
fixed #321 - delete otr fingerprints
Merge branch 'development' of github.com:siacs/Conversations into development
warn on missing presence subscription
don't fail displayed or received messages
settings to force encryption and setting for not saving messages to disk. fixed #353
fixed sending offline pgp messages