solve a bug in an SQL request

tunnel manager now display checking tunnels instead of refreshing tunnels when it only replace the dead ones

    When the bootpeer was blacklisted, it was still inserted in the peers table
    When 0 tunnels had to be made, re6stnet asked for 0 unsed peers, recieved an empty list and thought he had to ask new peers to the server

remove some unecessary info when connecting to the server

A lot of bug fix

Removing of the bandwidth calculation

When 2 tunnels are estabilshed between the same 2 peers, one of them is deleted

Remove the refresh-rate option

Added new simulation results.

Check for dead tunnels evry 5 seconds instead of waiting for the next tunnel_refresh

Conflicts:
	TODO

I've akso changed the datastructure to bz able to see the graph evolve much faster

Added exception catching in db, and modified utils.log so tht it can be used with anything ( and not only a string )

Conflicts:
	TODO
	tunnel.py