Lots of interface changes.

- inputs get rounded corners.
- inputhelp becomes inputbox-help and surround concerned input.
- chatbar reworked with rounded buttons.
- hide chat input if chat is hidden in small screen mode.
- replace hall menu with buttons.
- add button (title) for chat and userslist.
- color chat messages odd/even.
- cumulate messages from same spammer (chatter).
- show timestamps in chat.