Remove unused object from sections view
Remove workaround for Rails 2.x stuff

It is no longer needed since MarkUs does not run on Rails 2.x anymore.
Remove an unused code path

I seem to have forgotten this when doing the encoding upgrade.
Merge pull request #1526 from ferrous26/wat

Remove unused object from sections view
Merge pull request #1528 from ferrous26/oops

Remove an unused code path
Merge pull request #1527 from ferrous26/dce2

Remove workaround for Rails 2.x stuff