[worldStateManager]: use Vocab instead of string for database fields
Merge pull request #4 from gsaponaro/populate_OPC

[worldStateManager]: use Vocab instead of string for database fields
[worldStateManager]: fix lists
Merge pull request #5 from gsaponaro/populate_OPC

[worldStateManager]: fix lists
Merge pull request #6 from vicentepedro/master

[change] property type - Vocab to str
[worldStateManager]: use string for property names.

See also vicentepedro@8ff7096bda4ad5341295d940363a959d4bf82675
[worldStateManager]: start playback mode; add missing OPC stuff to XML
[worldStateManager]: progress in populating OPC, fix XML
Merge pull request #7 from gsaponaro/populate_OPC

[worldStateManager]: progress in populating OPC, fix XML
OPC format: (("pos" list) ("name" "nameValue") ("desc2d" list) ("is_hand" bool) ("in_hand" "inHandValue") ("on_top_of" list) ("reachable_with" list) ("pullable_with" list))
Merge pull request #8 from gsaponaro/master

new OPC format
add new properties: is_touching (contacts between objects) and is_free (availability of hand for grasping)
[worldStateManager]: RPC port
add license
[worldStateManager]: add thrift file for RPC interfaces
[worldStateManager]: add threads, better separation between perception and "dummy file" playback mode, some new functionalities
formatting
[worldStateManager]: add offset property (end-effector transform when grasping tools)
Merge remote-tracking branch 'upstream/master'