New updates to system, and to sawa wiki

WEB
removed flexigrid
added better notifications
added raw chart
changed all files to the right names (networks, sensors, etc)
better way to upload sensor data via HTTP
added sensor gallery
options to select data parameters on exporting data
edit configuration
services status
user list

DATABASE
added support for messages, events, sensor properties, custom rules and policy groups

SERVICES
added support for date rules and database history rules
added events logging support