More accessibility updates suggested by Greg Kraus
no message
Moved h1 style changes from bootstrap.css to math4.css
Merge branch 'release/2.8' of https://github.com/aorinevo/webwork2 into reaccess

Conflicts:
	htdocs/js/vendor/bootstrap/css/bootstrap.css
Merge pull request #238 from goehle/reaccess

Accessability
Merge pull request #224 from goehle/importbug

Set Import Bug
Merge pull request #219 from goehle/dateshift

Shift Import Dates
Merge pull request #233 from goehle/bootstrapfix

Moved bootstrap fix
Merge pull request #235 from goehle/essaylinks

Grader Page Tweak
Change status message 'changes saved' so that it is in green instead of red. Change class from ResultsWithError to ResultsWithoutError -- this fixes bug #2926
Change year to yr in Units help
Fix issue where adding problems in LB1 end up with empty weight
Fix cosmetic glitch in math3 theme for LB1 with a non-breaking space
Comment out what looks like a debugging message
Merge pull request #239 from mgage/release/2.8_smallfix

Release/2.8 smallfix
Merge branch 'release/2.8' of http://github.com/openwebwork/webwork2 into bugfixes

Conflicts:
	htdocs/themes/math4/math4.js