Combined changes from verbalization and rtlntv branch

See merge request !16

Familiar Object Verbalization

See merge request !15

Updated objects at location skill to familiar objects

"Where did you last see" skill now replies with "I cannot remember having seen [object_name] in the recent past" if the object is not in the LTM or the search took to much time and aborted

- start and end timestamp need to be reversed
- duration needs to be smaller than WM max history size (due to the reader used)

stanford-related changes

See merge request !13

Added verbalization of objects with multiple instances (required for familiar objects) for skill ObjectsAtLocation

- code is very similar to Code from SemanticSceneDescriptionVerbalization from Fabian R.

- allows to trigger skill twice, then first request will be aborted, second will still be run
- currently no speech output

added parallelization of search, for LTM sizes < 1 day the speedup is too...

See merge request !12

# Conflicts:
#   source/armarx/speech/skills/object_last_seen_at/core/ObjectLastSeenAt.cpp
#   source/armarx/speech/skills/scene_knowledge_verbalization/skills/CMakeLists.txt
#   source/armarx/speech/skills/scene_knowledge_verbalization/skills/ObjectsAtLocation.cpp

added parallelization of search, for LTM sizes < 1 day the speedup is too small to actually use it, so it is outcommented at the moment

Merge branch 'feature/verbalization' of git.h2t.iar.kit.edu:sw/armarx/skills/speech into feature/verbalization

Merge branch 'feature/verbalization' of git.h2t.iar.kit.edu:sw/armarx/skills/speech into feature/verbalization