Ignore last commit message, 'BizChat' project has been added to the repo in this commit, not the last one. All previous commit messages also apply to this commit, in addition:

- New Chat room screen with basic pull up/down keyboard functionality
- Integration of the DAKeyboard library
- Creation of a few custom table view cells
- View hierarchy has been updated to reflect recent design changes
- Lots of placeholders buttons now, well, in place… :)