Second version of unified frame edit view

data/unification/unify_example_small.xml

entries/static/entries/css/unification_frames.css

entries/static/entries/js/entries.js

entries/static/entries/js/selectional_preference.js

entries/static/entries/js/unification.js

entries/templates/entries_base.html

entries/templates/unification_edit_display.html

entries/templates/unification_frames.html

entries/views.py

unifier/models.py

unifier/views.py