Standarize on 'content' for all templates

I attempted this standardization in 4d9bd8d2. Looks like I missed
these 2.
Merge pull request #110 from RickMohr/remove-interactivity

Remove "interactivity" for UTF grid requests (now handled by tile server)
Read UTF grid plot ID key from config

The name of the plot id field in the UTF grid changed, so rather than
just update it, I moved the field name out to settings.js.
Add management command to import otm1 data
Merge pull request #94 from steventlamb/topic/more_dev_data

Add management command to import otm1 data
Force tree layer to refresh on filter change

Without {force: true} the layer was not updating until the map was
panned or zoomed.
Merge pull request #112 from jwalgran/fix/force-layer-refresh

Force tree layer to refresh on filter change
Merge pull request #111 from jwalgran/fix/utf-plot-id

Read UTF grid plot ID key from config
Set up login/logout and profile redirect

Django auth, by default, redirects a successful login to
/accounts/profile/. I set up a redirect from /accounts/profile/ to
/users/{logged-in-users-username} so that we have a consistant URL
for viewing both the page for the logged in user and any other user
page.

If a user is not logged in /accounts/profile/ redirects to
settings.LOGIN_URL
Merge pull request #108 from jwalgran/topic/login-workflow

Login workflow
Add typeahead.js, and don't parse js/lib files for performance
Make common_name a required field, add display_name property

display_name is will be used as the value to put into an autocomplete box
Refactored species model and autocomplete view to support typeahead.js

Since the typeahead supports client-side filtering there is no need for a
SpeciesManager

typahead.js expects an array of 'datums', which contain a value and a list
of searchable tokens, so those need to be added to the json response.
Modify the species dropdown to be a typeahead.js autocomplete.

Since very similar code will be used for the boundaries autocomplete,
the actual calling of typeahead is abstracted into a wrapper module.

Mustache templates are used for simplicity, but any JS templating engine
that can pre-compile templates should be able to be dropped in as a
replacement fairly easily.
Add very basic styling to typeahead dropdown
Add a header with login and registration links

This makes it easier to test and demo auth and registration.
Reorder JS imports
Fix password bug in custom registration backend

When creating new users I was saving the unhashed password rather than
calling set_password which made it impossible for newly registered users
to log in.
Clear previous eco results on search

Because a large eco search takes seconds clearing the previous search
is a cue that something is happening. In the future, this will most
likely be replaced by some sort of spinner.
Fix eco template to reflect updated view response

The names of the keys in the basis dictionary changed at some point,
making the template always show empty values for plot and tree counts.