Enhancement: Make crash report IDs easy to copy

Users can now click on crash report IDs to copy them to
their personal clipboard. This way, they can easily
reference them in bug reports.

https://github.com/dschmidt/libcrashreporter-qt/pull/25
https://github.com/owncloud/client/issues/8130
https://github.com/owncloud/client/pull/8540
