urdf based camera transform
Added gaze_sim link specifically for simulation
Removed useless things and camera_link frame from urdf...

...it should be published outside depending on WALKMAN_PROFILE
Added plugin to push the robot
Merge branch 'DRC_sixth_sprint_week' of https://github.com/EnricoMingo/iit-coman-ros-pkg into DRC_sixth_sprint_week
bug solved: Gaze frame should be defined also when XTION is not used
Moveit configuration updated
Started refactor of coman xacro. Added torso refactored.
Added torso link in torso.urdf.xacro
Added part for arms. Added first three joints of each arm.
Deleted form old forearm mesh the elbow. Added elbow joint and link in arm.
Fixed bug in launch file
Moved forearms in parts folder. Updated path for coman.urdf.xacro. Added line to debug fast in coman_slider.launch
Moved fake joints for forearms inside parts/forearms.urdf.xacro
Added some variables in no_forearms.urdf.xacro
Deleted coman_transmission.urdf.xacro
Deleted "if" to include coman_transmission
Deleted .urdf files since automatically generated from the scripts
Added sensor folder. Moved imu links and joints in sensors/imu.urdf.xacro
See previous commit