Merge pull request #29 from RethinkRobotics/release-0.7.0

Release 0.7.0
Synching baxter_core_msgs with latest robot message updates.
Renames gripper meshes intelligibly. Trac #9724.
Merge pull request #34 from RethinkRobotics/mesh_update

Renames gripper meshes intelligibly
Adds latest pneumatic gripper STLs and DAEs.
Adds electric gripper with fingers.
Merge pull request #31 from RethinkRobotics/sync_msgs

Synching baxter_core_msgs with latest robot message updates

May be readdressed or added to in future commit changes before next release.  Merging current changes so development can continue for now.
 Modified the URDF to include the various sensor plugins
Merge pull request #37 from RethinkRobotics/early_dev_URDF

 Modified the URDF to include the various sensor plugins
Adds 'old' pneumatic gripper meshes to provide continuity.
Renames pneumatic_gripper to pneumatic_gripper_base, matching electric gripper form.
Merge pull request #35 from RethinkRobotics/mesh_update

Adds latest pneumatic/electric gripper STLs and DAEs
Adds raw joint position control mode to baxter_core_msgs JointCommand.msg
Merge pull request #38 from RethinkRobotics/add_raw_position

Adds raw joint position control mode to baxter_core_msgs JointCommand.msg
Adding seed options to IK Solver Service srv file

Adds new optional field for joint angles seeds to be used by IK
Solver. Also adds seed type mode field for controlling behavior
of seeds used by IK Solver.

Corresponds to change on robot-side S/W in service provider.
Adds accelerometer joints/links in support of Gazebo simulation

Cleans up/syncs with robot changes.
Merge pull request #39 from RethinkRobotics/ik_seed_service

Adding seed options to IK Solver Service srv file
catkin_lint - adds components keyword to packages
Colors new URDF display link black
Merge pull request #41 from RethinkRobotics/catkin_lint

catkin_lint
Merge pull request #40 from RethinkRobotics/urdf_updates

Adds accelerometer joints/links in support of Gazebo simulation