Handle several special characters.

These affect the javascript parsing and/or queries:
   backslash, apostrophe, and double-quote.

Issue with click through on charts
* Reset the date fields, not clear them.
* Make sure hidden fields are cleared (better logic for xtype comparison)
* Ensuring that all non-system form fields are cleared.
Add PostgreSQL as a compile time dependency.

This removes the need to put the PostgreSQL JDBC driver in Tomcat's lib
directory, as long as you use application-managed connection pooling. If
you want to do container-managed connection pooling, then obviously you
still need to put the driver in lib.
Add split between Saved Queries and Query Entry
Per-user salting.