Readd page search feature
Lost in port from KHtml to QWebEngine
Initial working code to restore the feature, copied from KMarkdownWebView and adapted a bit.
More features would be nice (color coding if search hits, history, starting with selected text), but that can be done later by interested people. Being able to search on a page at all is already an improvement by itself IMHO :)
FIXED-IN: 6.0.2405
Edited by Friedrich W. H. Kossebau