List problems in table, add # task, score and edit link for admin
Use thead
Change Problem header to Name
Fix editor disappearing in responsive mode
Merge branch 'fix/disappearing-editor' into ui/nice-listing
Make Contest listing a table
Make User listing table
Only show # invited to admin
Merge pull request #12 from piratefsh/fix/disappearing-editor

Fix editor disappearing in responsive mode
Merge pull request #15 from piratefsh/ui/nice-listing

Show more info on listing for Problems, Contests and Users
Hide no. of submissions left after the answer is accepted.

Addresses #13.