Search pattern can occur later in pad-name

Searching for `meeting` now not only matches names like

    meeting-feb

But also

    feb-meeting

And

    g.x9VnLKRXzgSfjwZy$02-feb-meeting

(the latter kind of url’s produced when using Etherpad’s group functionality)

Thanks to @latsami for pointing out the solution
Merge pull request #19 from codingisacopingstrategy/patch-1

Search pattern can occur later in pad-name