Adding folder for problem attachements
Revert "Adding folder for problem attachements"

This reverts commit 6152d7847c2775948bb724e0fc39054788c2920c.
Merge branch 'master' of github.com:alexanbj/programming-ladder into attachments_to_problems
Using awesome-font instead of bootstrap glyphs
Minor change to wording on home page
Merge branch 'master' into attachments_to_problems

* master:
  Minor change to wording on home page
  Added front page.
  Deleting a problem now corrects the users' scores and solved count
  'Knowit' -> 'Programming Ladder' in as brand in navigation bar