Implementing pop-up ui elements
WIP, need to figure out why UI isn't launching...
Most things hammered out with exception of timeout functionality.
Fixed improper passing of a function
Finally have ui timeout sorted.
Needs work on dynamic resizing based on text length.
Added ui node to api launch file.
Wrapped up UI Node add, added comments and played with UI sizing.
Changed respond to response for clarification and added comments detailing usage.
Fixed comments, cleaned up imports.
Merge branch 'ui_add'

Conflicts:
	corobot_bringup/serverAPI.launch

    Resolved by removing serverAPI.launch and adding appropriate line to corobot-all.launch
Merge branch 'master' of github.com:corobotics/corobots