[ref] normalise all name to 40chars
[enh] give a new player a neutral asset
[fix] field name error
[fix] randname error, always same length
[fix] call value() in features()
[enh] add a function to retrieve a single feature
[enh] add testcase about stock.techno
[enh] add generic for feature set
[enh] use generic feature set in techno
[enh] add scheme model
[enh] add fleet model
[enh] add migrations data for fleet and scheme
[ref] throw feature system out of the window, pure sql
[enh] feature factory to list them all
[fix] wrong check for feature translation
[enh] add default checking
[enh] improve default value of models
[fix] remove useless import
[ref] remove old migrations, migrate can't take them
[ref] add related_name in fleet