Merged requested to merge topic/heptapod/hg_url_import into branch/heptapod
Patch to bring back the import from URL process.
- hides the buttons we don't use in the import form
- change import so that it setup a git and hg repository using the same process as the create, then proceeds to a hg pull to the repository
- import in progress UI has been updated to reflect the hg pull instead of git clone
Details of implementation changes below (wip)