Allows logging in as a local user, instead of only CAS, in /admin/

I need to be able to log in if I'm working on DMT in a non-CAS
registered domain, like on my laptop. If there's a better way of doing
this, let me know, but right now this seems like the best way to me.
Merge pull request #186 from zmustapha/project-forms-cleanup

Styled the Create Project and Edit Project forms
Fix "NaN-NaN-NaN" bug in bug/item forms in Firefox

PMT #97819

Firefox was parsing `new Date('Jan. 14 2014');` into an `InvalidDate`,
while Chrome parsed it fine. Note that Firefox parses
`new Date('Jan 14 2014')` (without the dot) correctly.

I considered using moment.js to parse this date, but apparently that's
not moment.js's job. It throws a deprecation warning when you try to use
it to parse dates like that: https://github.com/moment/moment/issues/1407

The way I've solved it is by using datetime.date's `isoformat()`
function to always render this date in a predictable way that should
always be parsed by `new Date();`.
Merge pull request #187 from ccnmtl/add-local-login-form-to-admin-login

Allow logging in as a local user, instead of only CAS, in /admin/
Merge pull request #188 from ccnmtl/fix-ff-bugs

Fix "NaN-NaN-NaN" bug in bug/item forms in Firefox
Added text that appears when project has no outstanding items.
Edited text
Made all the milestone item tables sortable (Overview tab)
Sorted column has highlighted header
remove accidental dashes
Merge pull request #189 from zmustapha/project-overview-tab

Project overview tab
Overview tab content cleanup and mobile-compatibility
Merge pull request #190 from zmustapha/project-overview-tab

Overview tab content cleanup and mobile-compatibility (!)
moved RSS feed link to the actions bar
Project Details content cleaned up
Merge pull request #191 from zmustapha/project-details-tab

Project details tab
Restyle UI. Removed display of replies to forum posts, now displaying only parent posts
Restyled display of all forum posts
Added Markdown instructions on node-detail template
Merge pull request #192 from zmustapha/forums-cleanup

Forums cleanup