Removed redundancy in initialization

I removed the initialize.py script that was redundant with the
initial_data.json and also cleaned up the initial_data.json so it
corresponded to what was in the initialize.py script so that things
would work.

I have done basic testing (wiped, reinitialized, poked around) but not
any automated testing because I can't get automated testing to work
(!!!).
Tweaks for Competition Edit

Working on issue #154
Merge branch 'master' of https://github.com/codalab/codalab
Moved templates

Moved templates to a more rational location based on their use.
In progress on #154
cause-effect competition initialization.

This is a commit that captures the cause-effect competition.
Work on competition editor

For #154
Merge branch 'master' of https://github.com/codalab/codalab