* Fixed group share searching for members of
multiple group. Issue #11808.
* Fixed group share searching, continued.
Avoid searching for empty group list in getItemSharedWithUser().
Broke tests in previous commit, #12030.
* Simler check for group count.
* Fix for https://github.com/owncloud/core/issues/24783 , described there
* Now it's #24272, 24783 was a duplicate. Previous change was also not very good. Now we don't create ZIP with a single file inside.
this.updateSearch() sets the current file list instance and clears the box. This is unnecessary and makes the search box unsuable on some mobile devices where a keyboard fade-in causes a onResize trigger, which would then clear and blur the box.
add checkbox to toggle show/hide hidden files
persist show hidden setting
fix settings menu layout
test ApiController::showHiddenFiles
don't show hidden files by default
Store config in Backbone model and inject it into FileList
Filter files only temporarily when rending the file list
Fix file rename validation
jquery.fileupload offers the [`pastezone`](https://github.com/blueimp/jQuery-File-Upload/wiki/Options#pastezone) functionality. This functionality is enabled by default and if somebody copy-pastes something into Chrome it will automatically trigger an upload of the content to any configured jquery.fileupload element embedded in the JS.
This implementation triggers some problems:
1. The pastezone is defined globally by default (🙈). So if there are multiple fileupload's on a page (such as in the personal settings) then stuff is going to be uploaded to all embedded uploads.
2. Our server code is not able to parse the data. For example for uploads in the files app we expect a file name which is not specified => Just an error is thrown. You can reproduce this by taking a file into your clipboard and in Chrome then pressing <kbd>CTRL + V</kbd>.
3. When copy-pasting some string from MS Office on the personal page a temporary avatar with said content is created.
Considering that this is anyways was never working at all and causes bugs I've set the `pastezone` to `null`. This mens that upload via copy and paste will be disabled.
Lesson learned: Third-party JS libraries can have some weird details.