Adding tags to achievements
Merge branch 'release/2.8' of http://github.com/openwebwork/webwork2 into itemweaks
Merge branch 'release/2.8' of http://github.com/openwebwork/webwork2 into itemweaks
Added problem tags to the available variables for achievements
Made some more documentation changes for the tag addition
Merge pull request #199 from goehle/itemweaks

Added $tag Variable to Achievements