m430ia2p: update urdfs based on DH data. For #54 and #63.
m430ia2f: update urdfs based on DH data. For #54 and #63.
support: add 'base' link (transform to World Coordinates). Fix #101.

This should not affect existing kinematic plugins or MoveIt configurations:

 - the link is not part of the main kinematic chain
 - the transform is implemented as a fixed joint
m430ia2f: fix mirrored meshes. Fix #109.
Update readme.
all: fix indent to follow ROS styleguide. Fix #118.
all: update manifest links to wiki. Fix #121.
tests: explicitly declare dependencies of roslaunch tests. Fix #70.

This introduces a hard dependency on roslaunch >= v1.9.55, but that
has been released into Groovy, Hydro & Indigo. Package manifests have
been updated to build_depend on that version or newer.

The industrial_robot_client package doesn't prefix its targets, so
any package declaring a 'joint_trajectory_action' target will
satisfy the roslaunch dependency (but also shouldn't build, as it
will clash with industrial_robot_client).