capability integration: adds retrievel of available capabilities from the server
caps integration: add services for installed and runnable apps (refs #67)
cap_int: adds starting/stopping capabilities
adds remapping for capabilities and support for semantic capabilities
rocon_app_manager: fixes capability-related error in app to message
method
rocon_app_manger: removes unused cap class
rocon_app_manager: fixes error when stopping a not running app
rocon_app_manager: adds some cosmetics (clean up, docs)
rocon_app_manager: applies major revamp to CapsList class
* determine supported capabilities (interface + provider)
* makes more efficient use of the SpecIndex class
* adds stub for provider remappings
adds updates, cleanups and formatting
 * applies PEP 8 formatting
 * adds minor clean-ups
 * caps
  * enables provider remappings
  * simplifies caps data handling and caps start/stop methods
  * updates and improves documentation
merging changes from hydro-devel
rocon_app_manager: adds timeout for initialising capabilities from service
rocon_app_manager: re-winds changes in service and topic names to remain backward compatibility
rocon_app_manager: changes request by PR comments
Merge pull request #110 from robotics-in-concert/capabilities_integration

Adds capabilities support for the app manager