build css

looks like a recent PR didn't have a final render of the LESS
fix handling of no-checkpoint-defined

a few typos and missing handling of undefined checkpoint

regression introduced in #6205
minor fixes in dashboard tests

events and regular expressions weren't quite right, which could cause occasional test failures.
Merge pull request #6370 from minrk/handle-no-checkpoint

fix handling of no-checkpoint-defined
Merge pull request #6371 from minrk/dashboard-test-quickfix

minor fixes in dashboard tests
Merge pull request #6359 from minrk/build-css

build css
Remove add/remove class methods,
Remove helper set/get css methods
Fix tests
Initial crack at using specific traits for styling.
Partial implementation of styles
Finished style attributes.
Fab CSS
Updated widget examples for recent changes and,
renames from earlier PRs
Fix some bugs found by the widget examples,
add margin and padding base traits,
add overflow traits to box base.
Added Bootstrap specific classes,
and fixed a few bugs here and there...
Added bootstrap3 progress bar classes
Remove references to add/remove_class methods.
Fixed rebase bugs and other bugs.
Fab CSS