Merge pull request #66 from dantleech/fix

Handle case where children is NULL
Merge pull request #67 from dantleech/rename

Renamed tree form service reference
add comment for when dropping symfony 2.1 support
[WIP] For automatic routing
Refactored route manager
Added support for removing and updating
Added Doctrine listener, but am stuck on a inifinte loop with a memory
leak :(
AutoRoute stuff
Tests almost work

- Still have problem with route ID not being updated in test case. (but
  looks ok in the database)