TabBar navigation: Force back to recents list on logout
Room details: display attached images
Support new actions in Room details: Invite, Image attachment
Add uploadImage method (to upload an image and its thumbnail to homeserver)
Room details: adjust bubble size to attached images
Handle events related to user's avatar change
upload image: width and height are integer
Add new settings: sort members list by last seen time (by default display name is used).
Merge remote-tracking branch 'origin/master' into sdks_unification
Apply SDK renaming through the sample app code