fsr -> staff renaming part 1: rename the fsr app, add migration
fsr -> staff renaming part 2: change all other occurrences of "fsr" in the code
fsr -> staff renaming part 3: rename all the templates. fixes #324.
fsr -> staff renaming part 4: change occurrences of "student representatives"
Merge pull request #443 from karyon/fsr_staff_rename

Fsr staff rename