libotr
Merge pull request #343 from ashleyblackmore/patch-1

replace libotr2-dev with libotr5-dev
Handle room subject and broadcasts sent before roster received

Issue #341
Added null check for presence error stanza namespace element

Issue #341
Refactroed self presence checks, handle null stanzas

Issue #341
Merge branch 'master' into otrsmp
Added UI messages for smp question/answer result