Merge pull request #132 from maxwward/master

Database Trigger Bug Fix
Use "answer" instead of "solution" across the board.
Remove unused templates.
LaTeX wrapper in mathjax and report changed from '$$' to '!!'
Add drag and drop in cart to re-order report
Add a 'x' link in cart to remove an item
Bug fix in txt report format
Relocation of CART button to sidebar for #130; moved cart css styles from bottom_scripts to styles.less
Resolved issue #103

Conflicts:
	askbot/templates/exercise/solution_card.html
Add problem_card back.

Accidentally deleted in the last merge.
Merge pull request #136 from yingmao/master

multiple changes and bugs fixed
Issue #103, completing collapsing of problems
inline/display latex code change and login bug fix
remove RTF download
Changed Answer to Exercise
Adding LaTeX buttons to WMD for issue #104
committing new download sidebar, but disabled
Merge pull request #151 from yingmao/master

login bug fixed; inline/display latex delimiters changed; txt download changed
Fixed #141
Fixed #143
Fixed #152
Fixed #147
Merge pull request #153 from objcow/master

Resolved issues