recurse child Controls and use for search keywords;
Merge branch 'master' of git://github.com/gitextensions/gitextensions into settings-form-search
doc;
skip user input controls;
highlighting nodes in bold was causing text to be cut off: this has a Green BG with White text;
ToLowerInvariant for case-insensitivity; added a few more restrictions;
may help speed up load time;
Merge branch 'pr/n1569_bergerjac'