Move in backend javascript part to jQuery to count characters in user
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Merge pull request #2572 from xillibit/k31_bugs3

Move in backend javascript part to jQuery to count characters in user
Merge pull request #2609 from xillibit/kdev-patch-4

[develop][3.1.0]: Lightbox - Long file names are not trimmed #2608
Attachments will opened with the lightbox as well browser windows #2610