First pass at EAD display mostly assembled.
Merge remote-tracking branch 'origin/7.x' into 7.x-UCLA-10
Clean up XSLT, make static text in XSLT translatable...

Parameters and such, huzzah!
Wire up variables for Solr fields.

Also, add a couple more to be deleted on uninstall, which seem to have
been missed.
Add doc to template and remove the lie that was "attributes".

"attributes" is built automatically in template_process().
Use interpolated strings instead of the str_replace() silliness.
Merge pull request #7 from adam-vessey/7.x-UCLA-10

EAD display