update doc about installing libraries to RUNTIME DESTINATION
Merge pull request #468 from jack-oquin/groovy-devel

documentation: organize documentation outline better
Suppress a traceback when a package fails to build
Refactored error handling logic
Include cd to buildspace in error reproduction command message
Merge pull request #470 from ros/suppress_traceback

Suppress a traceback when a package fails to build
add warning if versioned dependencies are not fulfilled (fix #472)