Adding PRM and ODT capabilities
Fix rspec 'its' problem : version regression
Rename columns 'on_demand_transportation' to 'flexible_service'
non nullable_attributes
Line.VehileJourneys through Line.JourneyPatterns
extend TimeTable model for Mantis 26837
fix vehicle_journey_spec, Mantis 26837
Add factories for vehicle journey import Refs #0026843
prepare timetable combinason methods
Fix tzinfo gem install
Fix tzinfo gem install from georuby-ext
Merge branch 'tad_pmr' into sismo

Conflicts:
	ninoxe.gemspec
add union, intersection and disjunction operation on time tables, Mantis 26838
correct some problems on time table disjunction
manage correct objectid autogeneration to avoid conflicts, Mantis 25466
duplicate timetable, Mantis 25466
update rails version for ruby 2
manage tags on time_table , Mantis 26833
Add tag_search attribute for time_table model Refs #0026833
Add ransack parameters for time_table Refs #0026834