Disable move/copy button until a target node is selected

[kjac]

Prerequisites

• I have created an issue for the proposed changes in this PR, the link is: Error copying document type, when no target folder is selected #3241
• I have added steps to test this contribution in the description below

Description

#3241 describes the issue, although only for copying document types. The same issue is present quite a few other places as well. Here's the list of places I've found (and fixed with this PR):

• Content move/copy
• Media move
• Document types move/copy
• Media types move/copy
• Data types move

To test:

1. Perform each of the actions in the list above
2. Verify that the "move" or "copy" button is disabled in the action dialog until a target node is selected

[abjerner]

@kjac thanks for another PR 👍

I just skimmed through your changes, and couldn't spot anything wrong. Nevertheless, I'll give your changes a test, and report back ;)

[abjerner]

Works as described - thanks for another great PR 👍

[nul800sebastiaan]

Cool, works great @kjac ! If you can approved changing ng-if to ng-show then this can be merged. 👍

[kjac]

@nul800sebastiaan while we're at it I'll replace the other similar ng-if's ... I'll just be a minute :)

[kjac]

There. All done!

[nul800sebastiaan]

😍 SuperTak @kjac ! 😁