For issue #329. Adding feature for stash functionality, enabling working on multiple computers
added requirement for stash.rb to exercism.rb
removing junk line from api.rb
Fix flagged by in seed data
Let user unlock their own assignments.
Delete code supporting approval
Remove locksmith behavior

I'm leaving the `mastery` bit for now so that people can be added to
languages as nitpickers without completing any assignments. This is
necessary when we kick off new languages, in particular.
Fix bob/example.hs for the last test change.
Add the multiple-line question test in haskell/bob
Add haskell/bob test for other whitespace chars.

This is to encourage use of Data.Char.isSpace over (== ' ')
instead of logout button, create dropdown menu to avoid accidently logging out
Merge pull request #620 from meaganewaller/fix_logout_problem

instead of logout button, create dropdown menu to avoid accidently loggi...
Merge pull request #619 from Kobata/haskell-bob

Haskell bob test improvements
Merge pull request #616 from kytrinyx/no-more-locks

No more locks
Tweak welcome message
Add getting started page
haskell accumulate
haskell binary-search-tree
haskell difference-of-squares
haskell hexadecimal