unified warnings/error msgs
Merge branch 'development' of github.com:siacs/Conversations into development
Merge branch 'development' of https://github.com/siacs/Conversations into development
moved hint box to the bottom
inital activity
changed support lib to v13. added tabs and fragments to start conversation activity
added action bar menu to start conversation
added group add button
filter contacts and starting confercenes
theming for tabs in start conversation
made searchview text color white
small changes
added contextual menu for contacts
added create contact dialog
Merge branch 'development' of https://github.com/siacs/Conversations into development
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