DB/Mongo
* implemented new coding style
* fixed lastInsertID
* use the new Cursor submodule

DB/Mongo/Query
- removed this completely dysfunctional class

DB/Mongo/Cursor
+ added a more appropriate means to actually query Mongo collections

Request
+ added missing docblocks
+ added support for PURGE request type (mostly for use with Varnish cache)

Request/Type
+ added missing docblocks
+ added input variable verification, stripping NULL bytes from values and checking variables for tampering with NULL bytes and the mighty confusing replacement of '[' with '_' (e.g. "session[id" becomes "session_id" by default in PHP)