Replace demo.vcg with a demo.rviz
Update gmapping demo as well.
Merge pull request #13 from daxtens/feature/rviz-fix

Fix demos to use rviz
added polar scan matcher
added correct license and references to PSM and CSM

Conflicts:

	canonical_scan_matcher/include/canonical_scan_matcher/csm_node.h
	canonical_scan_matcher/src/csm_node.cpp
added imu option to PSM, made CSM and PSM look similar

Conflicts:

	canonical_scan_matcher/include/canonical_scan_matcher/csm_node.h
	canonical_scan_matcher/src/csm_node.cpp
added demo dir to CSM, fixed PSM launch file
clean up: remove csm
updated launch files and rviz configs, removed old GPL files
equivalent to the one relavant line in the massive, unrelated patch filxr/scan_tools@6a6638318e066db0118eaf9982a19adc02c07a08
added reference in manifest of psm
Include an updated polar_scan_matcher, updated to work on Hydro
Make it run without crashing. Drift is unacceptably high.
uses <> for pkg headers
removes trailing spaces
replaces tabs and fixes imu <-> odom topic comment
Fix issue with NaNs: now check for NaN rather than 0 for out of range.
Merge pull request #16 from efernandez/clean

Clean
Merge pull request #14 from daxtens/feature/polar_scan_matcher

Updated polar scan matcher
various work - esp eliminate -ve values!