Include progressbar plugin to jquery-ui

Also upgrade to jquery-ui-1.10.4
Merge pull request #183 from editorsnotes/scans-not-showing

Include progressbar plugin to jquery-ui
Fix initial call to $.ui.progressbar in doc scans

This API must have changed at some point
Merge pull request #184 from editorsnotes/scans-not-showing

Fix initial call to $.ui.progressbar in doc scans
Merge pull request #185 from editorsnotes/account-creation-fixes

Update invitation process for our own User model
Merge pull request #186 from editorsnotes/account-creation-fixes

Fix bug in user creation fn
Merge pull request #187 from editorsnotes/account-creation-fixes

Fix order in call to has_project_perm
Add for_project method to TopicNode manager

Also remove unused import
Fix project-specific all_topics view

Probably after switching to the new Topic models, the all_topics views
for specific projects weren't being properly filter. They are now.

Also, remove an unused import.
Fix errors in topic templates

First, 'All topics' link wasn't being shown, because I'm an idiot.
Second, there was a markup error in the list of topics on the 'all
topics' page, because I'm an idiot
Merge pull request #188 from editorsnotes/topic-browsing

Kissed some of the topic browsing boo-boos
Try .travis.yml configuration?
Fix quoting in .travis.yml
Fix more errors in .travis.yml
Remove xapian from requirements.
Merge pull request #189 from editorsnotes/rm-xapian-req

Remove xapian from requirements.
Fix quoting issues & try to reduce lxml compile time
fix collectstatic call
Add elasticsearch to .travis.yml
Change fabfile to use venv python if needed