Clean-up
Added twitter functionality for interactive map and control card reader

The map now contains a twitter button at the mosaic area.
Twitter functionality has been added (needs testing on robot)
A nod using the control card has been added (needs testing on robot and an idea for the collect command)
The pausing only pauses the navigation and not the scheduler.
Merge pull request #2 from cdondrup/master

Added twitter functionality for interactive map and control card reader