Update the Opendaylight guide

Add MD-SAL analysis
Update the <Efficient Tools PhDs Must Know>

Minor change
Add more IDE tools
Format into two columns
Start <Deeply Understanding OpenStack Networks>
OpenStack Networking Details: Add more details on the openvswitch rules
Add details on the security group implementation + Vlan RDO answer file
Add rule details of the vlan mode.
Merge pull request #1 from yeasy/master

update