Johtaylo 1059 search special characters

This change allows search to distinguish special characters in the Title, Description and Tags fields. So search should now be able to distinguish between C++ and C# in those fields.

This change also updates the lucene dependency from 2.9.2 to 3.0.3. (And this newer version is the one that is compatible with the latest rev of the Lucene Azure Storage package.)

Fixes #754