Improve error message when moving a content to a folder with same name

[aro]

In Content Studio:

• Create a content /mycontent
• Create a folder /myfolder
• Add a content with the same name inside the folder: /myfolder/mycontent
• Select /mycontent and try to move it to /myfolder/

The move operation fails, which is correct. But the feedback is not very good. The error message shows "Content could not be moved", but it is in green like a successful result. Also the message could be more specific, when moving to a parent containing hundreds of children it is not obvious why it fails.

This issue was reported in a support: ticket 2334

[alansemenov]

@vbradnitski this is very connected to https://github.com/enonic/xp-apps/issues/505. we need to pass type (success/warning/error) in the server-side notification and display client-side notification in correct color.

I'm not sure about the more specific message though, I don't think we can figure out why move operation failed. If we can - improve that too.

[alansemenov]

@pmi see the last comment - we have two issues with the same problem.

[pmi]

Issue moved to enonic/xp #6059 via ZenHub