Associate institution coming from CAFE to institutions in the portal
Views for institution identifier
Tests for setting institution via shibboleth data
Fix missing partial destroy_space in manage/spaces
Add missing shib_env_variables to sites/edit and sites/show

Also improved some strings related to shibboleth and the account association
view.
Merge remote-tracking branch 'upstream/branch-v2' into branch-v2
Merge PR #4

Merge remote-tracking branch 'origin/branch-v2-rnp-cafe-associate' into branch-v2
Small adjustments after PR #4

refs #1079