some refactoring
Merge branch 'master' of https://github.com/Fathalian/nestor

# By Farzad
# Via Farzad
* 'master' of https://github.com/Fathalian/nestor:
  modifiying all the existing "incomingConnections" based on the new syntax. Also add the 2-way connection between EC2 and SecurityGroups with the new syntax Note: the back-end code ro interpret the new syntax is Not Implemented Yet
  defining a new syntax for "IncomingConnection" tag of a component