Allow deletes to not be Parameterized

Allow deletes to not be Parameterized in order to get optimal
performance under certain scenarios in SQL Server and MySql.
Forgot add quotes and commas

Doh, forgot some of the sql.
Merge branch '2.5' of https://github.com/golfguru/ravendb into 2.5
Better approach
RavenDB-1100. started working on Backup Operators group support
RavenDB-978 Better text for warning about reset to sql replication
RavenDB-928 Make sure to track the number of _inputs_ into an index
Fixing non 304 response
Fixing minor issues
RavenDB-1100. adjustments in RoleFinder
Merge branch 'RavenDB-1100' of https://github.com/ppekrol/ravendb into 2.5
Adding debug output for the sql replication - will send the output() calls to the log
Better debug info
Output the size of the in memory index as well
* Making sure that we tell the index definition storage about the new index before we actually publish its creation, so we can be sure that it would know that this is a new index and create it in memory
* Null checks
Making sure that we flush in memory indexes to disk as needed
Better semantics
Won't start map/reduce indexes in memory
Removing installer from the default solution to speed up build times
Hide _ fields from output of map/reduce