Partial re-design and full re-write of the Chat Style.
1. ) UI elements have been re-designed and implemented to look consistently.
2. ) Re-design of Call, Voicemail, Topic and Transfers.
3. ) Updated media-queries to be more simple and flexible.
4. ) Removed a lot of RGBa and opacity values to improve performance in large chats.
5. ) Many more minor improvements towards consistency, quality and a better user experience.