RSL: Behavior model improvements

[pablohoch]

Passenger behavior model improvements:

• Revert forecasts: If a delay forecast leads to a broken transfer, affected passenger groups are rerouted. If the transfer becomes viable again in a later delay forecast, the rerouting is now reverted.
• Uninformed passengers: Added an option to specify a percentage of passengers that don't receive real-time information or ignore it. These passengers will continue their planned journey until the planned transfer breaks and choose an alternative from that point onwards.
• Expected major delays: If a major delay (e.g. > 20 minutes) is forecast, passengers may decide to choose alternative journeys, even if their current journey isn't broken. The percentage of passengers choosing an alternative can now be configured (previously 100%).

New options:

• paxforecast.revert_forecasts=1 : Enable the "revert forecasts" functionality
• paxforecast.uninformed_pax=0.2: 20% of passengers ignore real-time information
• major_delay_switch=0.2: 20% of passengers may switch to alternatives if a major delay is expected

Various bug fixes:

• Major delay handling
• Rule service handling
• Make /paxmon/trip_load_info work for all trips
• RI Basis handler fix
• /paxmon/reroute_groups fixes and improvements
• Fix for reroutes changing the scheduled arrival time of the destination stop

Removed:

• Load forecast messages