New updates to system, and to sawa wiki

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

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

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