Removing packages which have been failing consistently on groovy debbuilds

Removing these will save us attempted build cycles.
Adding demo_lidar to documentation index for groovy
Merge pull request #2614 from ros/clear_broken_groovy_release_jobs

Removing packages which have been failing consistently on groovy debbuil...
Merge pull request #2615 from jizhang-cmu/patch-1

Adding demo_lidar to documentation index for groovy
Adding demo_lidar to documentation index for fuerte
Merge pull request #2616 from jizhang-cmu/patch-2

Adding demo_lidar to documentation index for fuerte
xv_11_laser_driver: 0.1.2-1 in 'hydro/release.yaml' [bloom]
Merge pull request #2617 from rohbotics/bloom-xv_11_laser_driver-1

xv_11_laser_driver: 0.1.2-1 in 'hydro/release.yaml' [bloom]
octomap_mapping: 0.5.1-0 in 'hydro/release.yaml' [bloom]
Merge pull request #2618 from ahornung/bloom-octomap_mapping-1

octomap_mapping: 0.5.1-0 in 'hydro/release.yaml' [bloom]
add script to check if doc/source repos and their versions exist
update version of several doc/source repos for hydro, remove some which are not available anymore
update url/version for some ros-planning source repos for hydro
Remove roswww_pkg that'll be integrated into another package.
Merge pull request #2619 from 130s/master

Remove roswww_pkg that'll be integrated into another package.
Add py-multicast to the python rosdeps.
octomap: 1.6.2-0 in 'hydro/release.yaml' [bloom]
Merge pull request #2620 from ahornung/bloom-octomap-0

octomap: 1.6.2-0 in 'hydro/release.yaml' [bloom]
update branches of gen* packages
perception_oru: 1.0.2-0 in 'groovy/release.yaml' [bloom]