Fare: do not take default ticket currency into account

this was causing problem to sum real tickets (with centime as currency)
with unknown tickets (with euro as default currency)
Fare: add comments to tickets
Merge pull request #494 from antoine-de/tarif_CG37

Tarif cg37
Release: v0.102.0

* Fare: fix cg37 fare <https://github.com/CanalTP/navitia/pull/494>
Merge branch 'release_0.102.0' into release
Merge branch 'release_0.102.0' into dev
Fusio2ed: fix a segfault when a line is not associated with a network

in the network_map there is networks, not companies...
Merge pull request #495 from kinnou02/segfault_default_network

Fusio2ed: fix a segfault when a line is not associated with a network
Fusio2ed: fix a segfault when a line is not associated with a network

in the network_map there is networks, not companies...
Release: hotfix for fusio bug
Merge branch 'release_0.102.1' into dev
Ed: reading time zone in GTFS

for the moment the boost tz db (why didn't they use the olson db?..) is
loaded in the repository for convenience.

real work is starting now, with the utc conversion of all the stop times
Ed: no need to init the vp to 0 it is done by default
Ed: split on dst
Ed: tz handling for GTFS

fusio still need to be done
Ed: cout cleaning before PR
Ed: conversion frequencies stop times to UTC
Ed: fusio parser to utc
Ed: default timezone in fusio
ED: add stop area's timezone to database