implementing server-side includes for error pages

Conflicts:
	err/500.html
	err/browser.html
oops -- forgot err.css
Merge branch 'ssincludes_test' into testing

Conflicts:
	err/500.html
	err/browser.html
Switching role logic to test auditor stuff. (Should change later to use reasons)
Merge branch 'roles' into testing
Changing role/reason checks to accomidate auditors. Refactoring js on people page to use fewer brijj calls.
Merging roles into testing. Conflict in refactoring people page
Merge remote-tracking branch 'origin/master' into cleanup

Conflicts:
	err/500.html
	i/head_css.inc
Merge remote-tracking branch 'origin/testing' into cleanup