fix hello world skill parameters type

Refactor skills framework

See merge request !388

added utility to run subskills from within a skill so that automatically onStopRequested and onTimeoutReached are called. Skill Proxy has been moved to core package of skills.

split example skills in seperate files

remove getLatesNUpdates from skillsMemory interface as the same behavior can be reached through getSkillStatusUpdates(). Added methods to coreSegment.

added skillExecutionRequest to memory when skill is asyncronolously called

Fix visu of underactuated joints

See merge request !392

change structure of affordance files. Add framedBoxedLocations

See merge request !384

Ignore objects with class names starting with #

See merge request sw/armarx/robot-api!390

Gamepad: upgrade

See merge request sw/armarx/robot-api!358

Armar7 unit / integration

See merge request sw/armarx/robot-api!389