Summary:
Add a new button to copy to clipboard in English for usage in bug report. This
doesn't affect existing copy button which copy translated information for usage in local
forum, etc.

{F6504795}

Copied example:

Operating System: openSUSE Tumbleweed 20181219
KDE Frameworks Version: 5.53.0
Qt Version: 5.12.0
Kernel Version: 4.19.8-1-default
OS Type: 64-bit
Processors: 8 × Intel® Core™ i7-4710MQ CPU @ 2.50GHz
Memory: 7.7 GiB

Reviewers: #plasma, ngraham

Reviewed By: ngraham

Subscribers: ngraham, plasma-devel

Tags: #plasma

Differential Revision: https://phabricator.kde.org/D17773