Always strip html if server does not support it
Summary: The spec does not say that text containing markup has to be enclosed in <html> tags
Test Plan: Text with bold markup is shown bold on plasma. Plain text is shown when no markup is supported
Reviewers: Frameworks, broulik, mart
Reviewed By: broulik, mart
Subscribers: ngraham, kde-frameworks-devel
Tags: Frameworks
Differential Revision: https://phabricator.kde.org/D26769