FIX: Issues 2186 2587 3066 3073 3161 HTML escaping in titles

Overloaded 'title' for work, series, collection, in response to &amp; / &lt; / &gt; issues.

https://code.google.com/p/otwarchive/issues/detail?id=2186
https://code.google.com/p/otwarchive/issues/detail?id=2587
https://code.google.com/p/otwarchive/issues/detail?id=3066
https://code.google.com/p/otwarchive/issues/detail?id=3073
https://code.google.com/p/otwarchive/issues/detail?id=3161