Fixed a bug with rendering in library
Fixing some more 2.7 bugs
Fixed a css bug with math4
Fix overflow in site-links
Merge branch 'release/2.7' of https://github.com/openwebwork/webwork2 into upgraded2.7
Merge branch 'release/2.7' of https://github.com/openwebwork/webwork2 into upgraded2.7
Merge pull request #67 from mgage/release/2.7

Add chinese language  zh_CN.po
Fixing bugs in prepration for merge into master
- Backported add button bugfix for library browser
- Backported problemPreamble and problemPostamble buxfix
- Backported basic bootstrap integrationf or math3
Fixed site info file
Merge pull request #69 from goehle/upgraded2.7

Backports of Bugs
Fixed problem with Select All buttons
Merge pull request #70 from goehle/upgraded2.7

Fixed problem with Select All buttons
Added a tweak to the randomizer icon on the library page
Fix label position: put problem numbers BELOW bars in the bar graph
Merge pull request #71 from paultpearson/release/2.7

Fix label position: put problem numbers BELOW bars in the bar graph
Remove spaces after C in demoCourse.list

should get rid of the error messages about 'C ' not being recognized.
Merge branch 'release/1.7' of https://github.com/openwebwork/webwork2 into release/2.7
Merge branch 'release/2.7' of https://github.com/openwebwork/webwork2 into upgraded2.7
Fixed missing messages
Merge pull request #72 from goehle/upgraded2.7

Fixed missing message