Since sorting was enabled permanenty the list would be resorted with
each inserted issue. When inserting thousands of ignored files that
would make the whole ui freeze up.
Instead, sorting is disabled for inserts now and is reenabled after some
time has passed. That way users usually see the sorted view without the
lockups. Also, there's now a maximum of 50k issue entries.
To do this conveniently a bunch of functionality that's common to
IssueWidget and ProtocolWidget is moved to ProtocolItem.
Also the convenience function to asynchronously retrieve the private
link url is moved from the socket api to the network jobs.
Since these errors are blacklisted, it can take up to 24h to retry items
that had a 507 error for a while. This way users can intervene and cause
an upload attempt immediately.
For now we use them for:
* csync errors: This allows them to appear in the sync issues tab
* insufficient local disk space, as a summary of individual file errors
Insufficient remote space will use them too, as might other issues that
are bigger than a single sync item.
* Add a more functional error view #5516
* Allow filtering of ignores and warnings to see only important bits.
* Navigate from the folder view to the error view by clicking on the
error list with the red background.
* Move the error list into its own ui file to allow easier extension.
* Fix issue around tab id handling in ActivitySettings.
* Rename "Action" column to "Issue".
* Change mouse cursor to hand over button and new error list area
Several OSX fixes provided by guruz.
