pal_interaction_msgs: re-add Sound action
Remove unneeded package text_to_speech

Its functionalities (Sound action) have been merged
into pal_interaction_msgs in the previous commit.
Added a new definition for general language model management

This can be used for grammars, ngrams, and keyword spotting.
This will replace current grammar management definition.
Add the new grammar management message CMakeLists

Also changed the definition of ASRSrvRequest to deal with this new
general definition.
Grammar manament message removed.
Merge pull request #3 from jordiadell/rosapi2.1

Modification of the ASR ROS API to 2.1
add size of object in SelectTexturedObject
and add comments on both messages
Move Bumper message from reem_msgs to pal_device_msgs
pal_behaviour_msgs: add BehaviourTask action

This was taken from our internal 'behaviour_task' dry package
pal_behaviour_msgs: add Presentation action

From our internal 'presentation' dry package
Merge pull request #1 from po1/merge-sound-action

Merge Sound action into pal_interaction_msgs