Show an old prompt on the terminal when running a piece of code.

Addresses #8.
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.
Use format datetime for contest dates