Added EmoteDiagramWidgetPlugin to widget collection
Fixed #6599: Emote feedback will show correct icon
Changed test to refelct last changes intention
Login if enter or return key is pressed
Added basic support for audience questions
Reworked SessionInformationWidget for better style
Some fixes in new SessionInformationWidget
Changed http request due to server side issues
Hide icon if there is no feedback at all
Some minor style changes to session information widget
EmoteDiagramWidget should not show icon if there is no feedback
Fixed widget definition
Fixed wording in linux desktop file
Show smile emote icon of there are no feedbacks
Changed QRCodeWidgetLayout
Changes to login widget

Changed behavior of login text edit.
Placeholder is visible now.
Use gray login button if invalid session key.
Removed obsolete ui file
Make preview widgets clickable
Major changes to overlay widget

The widget gets smaller and with translucent background in different parts
The placement of some parts are changed now
Merge branch 'master' of ssh://scm.thm.de/arsnova/arsnovadesktop