Correct instructions for crendentialfile
Add locally hosted smoothness themes
Merge branch 'release/2.7' of https://github.com/openwebwork/webwork2 into release/2.7
Call local hosting of jquery smoothness theme
Use link to vendor/jquery... for images

instead of copying the image files.  This will make it easier to clean up
in the next release (I hope)
Merge pull request #78 from mgage/release/2.7

Potential fix for the "missing   css/images " error