Fixes a problem with asset container moves

Some views that allowed the moving of the asset did not execute the
post operation script correctly. This has been fixed.
Fixes a problem where sys.redir where not created

When a multi lang. page had the same NiceUri for both languages and was
moved to a place with different NiceUris only one redirect was created.
Reactive SiteNode now closes and reloads view

When the reactive SiteNode operation finishes the Properties dialog is
closed and the page is reloaded automatically.
Merge pull request #105 from stenbacka/move-assets-fix

Fixes a problem with asset container moves
Merge pull request #108 from stenbacka/sys-redirect-multi-lang-fix

Fixes a problem where sys.redir where not created
Merge pull request #107 from stenbacka/reactive-page-fix

Reactive SiteNode now closes and reloads view
Adds various impr. to the not. removal of entities

 * Fixes a problem where the ContentVersion's language name was not
   displayed for Content->Content references
 * Fixed a problem where all references from a Content was cleared when
   the user tried to only clear one (red cross symbol)
 * Changes the name of the force delete button in the reference views and
   adds an explanatory text instead so the user understand the effects of
   executing the action