Improve stats output

[answerquest]

Main page : Current GTFS data section: Presently loads like:

agency: 1 entries
calendar: 3 entries
fare_attributes: 10 entries
fare_rules: 576 entries
feed_info: 1 entries
routes: 2 entries
shapes_1: 720 entries
stops: 73 entries
stop_times_1: 13194 entries
transfers: 1 entries
translations: 72 entries
trips: 1056 entries

This is the output of a simple scan through the db folder. Need to refine this.

• Display the name(s) of the agency.
• Have a fixed order by which the main GTFS tables are listed and their number of entries mentioned.
• If there are any additional tables in the current feed, list them also.
• Mention if any required tables are missing from the current feed (ie, it wouldn't make a valid GTFS feed at this point).

[answerquest]

Done. Re-wrote GTFSstats() function in python side. Will be put up with v2.1.0

Enlists:

• agency name(s).
• mandatory GTFS tables
• optional GTFS tables
• extra tables present in feed but not part of traditional GTFS spec (only mentioned if present)

Other features:

• List number of entries in each
• Pad to have tabular like view
• Format numbers to have thousands separators
• If there are excess agencies, mention only first two and then put number of remaining

Sample output:

Agency: S-Bahn Berlin GmbH, Oberhavel Verkehrsgesellschaft mbH, and 38 more

1. Main tables: (*)
agency              : 40 entries
calendar            : 2,286 entries
stops               : 41,277 entries
routes              : 1,253 entries
trips               : 216,357 entries
stop_times          : 5,004,354 entries

2. Additional tables: (#)
calendar_dates      : 48,055 entries
fare_attributes     : 0 entries
fare_rules          : 0 entries
shapes              : 4,645,036 entries
frequencies         : 0 entries
transfers           : 96,085 entries
feed_info           : 0 entries

*: required parts of GTFS spec
#: part of GTFS spec but not compulsory