Use older version of pip and virtualenv.
Remove old view components.

As part of template cleanup effort, we're switching from Jinja2 to Mako
in order to reduce number of old packages which are not compatible with
Python 3.2.
Initial template with cleaner header design.

In the new template, we re opt to the simpler flat template structure
to reduce CSS processing overhead as well as allow us to do selector
optimizations.
Add topic show page and some stylings for forms.
Remove icon license as we have dropped all its usage.
Use older version of pip and virtualenv.
Ignore all production files, remove mosh.
Merge branch 'develop' into feature/experiment-view2