Preview unified frame list ux bugfix: not reload whole component on frame selection.

- local filtering reload only main view
- free lus allow to edit ready frames
- schemata view improvements (select, show only related)

# Conflicts:
#	frontend/src/components/unification/shared/frame-components/SemanticsSchemataComponent.vue

Schema show bugfix (no connection to argument).

Example connection bugfix.

# Conflicts:
#	entries/views.py