Adds title for any viewed page.

The title displays the icon of the current docset as well as the end of the url path.
This allows to quickly view the name of the current module/function.
Uses <title> for page title. Removes std::regex.
Merge pull request #112 from drognanar/master

Adds title bar. Fixes query reset.
20140215 release
Workaround for wxPython docset causing very high CPU usage
Merge branch 'master' of https://github.com/jkozera/zeal
Add Rust docset generator stub