Ongoing work for morouter:
 - Launch an interactive session for filters definition
 - instanciate a route and add it
 - list
 - flush
 - Modify ConnectorFilter, UserFilter, GroupFilter to work with IDs instead of objects and the run tests
Cleaning
Added a new FiltersManager in jcli in order to add/remove/list/show Filters which will be used to manage routes.

Remaining tasks:
 * Test FiltersManager
 * Complete mo and mt router managers with their persistence and tests
Added the possibility to add a MORoute with SMPPConnector
In progress: rethinking routing, routes & filter
Added testing for connector type when adding a route:
* MO Routes must accept only httpc connectors (and may accept smpps in future)
* MT Routes must accept only smppc connectors
* Added httpccm in jcli
* Completed morouter in jcli
Fixed tests
Messaging flows in one schema, drawed with yEd
* Added mtrouter manager in jCli
Added tests for filtersm (jCli)
Cleaned some filtersm testing code
Covered httpccm (jCli) with tests
* Routes: add testing for __str__
* RoutingTables: remove() covered
* router remote_moroute_remove and remote_mtroute_remove covered
* Covered morouterm (jCli)
* Covered mtrouterm (jCli)