Views ask for translation of "investigation"

[#52738161] Now if we set the locale to something like 'en-HAS', the view will look to see if there's a translation.

https://www.pivotaltracker.com/story/show/52738161
Several view strings were calling Investigation.display_name
provides a translation for 'investigation'
Setting the locale using hostname

[#52738161] This will ensure the has.portal.concord.org instance will use the en-HAS locale (which translates "investigation" as "sequence"). To apply this change to other instances, we should create similar locales for them.

https://www.pivotaltracker.com/story/show/52738161
s/windowwoo/window/ [#52735719]

https://www.pivotaltracker.com/story/show/52735719
Revert "Several view strings were calling Investigation.display_name"

This reverts commit bff4f4f76c0e3c002f3410cec51a51aa1e71127b.
Set localization by theme, not hostname
WIP: First cut of moving local_name_for into I18N
Replaces display_name, sets translation fallbacks
All specs pass with new translations.
Removes local_names lib
Show 'ExternalActivity' as 'Activity'

This is the labeling part for [#52734437].

https://www.pivotaltracker.com/story/show/52734437
Revised `display_name` definition
Testing the new `display_name`
Using `display_name` to "hide" ExternalActivities

[#52734437]

https://www.pivotaltracker.com/story/show/52734437
Make investigation => sequence the default

Only RITES keeps "Investigation" as "Investigation"

[#52738161]
Mock ResourcePage returns a `display_name` value
Making this mock work
Removing commented code
Fixing pluralizations