Merge pull request #8 from dpsolomon/hydro-devel

standalone visualization complete
+1
added configuration files for surface detection used for real sensor and recorded data modes
checks the value of the  'sim_sensor' argument in order to load the corresponding file
moved robot_blending launch file to godel_surface detection package
added two additional operations for finding surfaces only without scanning again
added find surfaces button and a LineEdit element for show messages containing a short description of the current operation that is running
added hooks to handle the 'find surfaces' button clicks and update operation status to the status line edit element
modified parameters to improve surface detection and triangulation
keeps a copy of the original data that was collected during the scan
added the 'address of' operator to the poses argument in the 'get_latest_scan_poses' method
removes print out of the entire trajectory message
handles the 'FIND_ONLY' and 'FIND_AND_RETURN' service requests
removed unnecessary empty lines
process_path_gen: add find script for openvoronoi dependency.
process_path_gen: avoid hard coding openvoronoi dependencies.

Also add cmake_modules build_dep (provides Eigen find script).
Merge pull request #9 from dpsolomon/hydro-devel

Fix for broken offset_sorter.patch
Merge pull request #10 from gavanderhoorn/proc_path_gen_build_issue

proc_path_gen: proposed fixes for build issues
saves pcl::PolygonMesh structures, which are to be used in the blending path plan generation
added new add_surface() and get_selected_surfaces()  methods to InteractiveSurfaceServer which accept and return pcl::PolygonMesh structures respectively
changed k_search and region grouping parameters