Use it for search and replace functions as well as for Locator.
The camel case navigation can be switched on / off with
the existing menu Options > Text Editor > Behavior >
Enable Build-in camel case navigation.
Fixes: QTCREATORBUG-21140
Change-Id: I3f2dcafff231366b3c8f08c14514dd8940cca2a0
Reviewed-by: Eike Ziller <eike.ziller@qt.io>
