use field_for to nest attributes
wrap creating the 3 matches in a transaction
simplify Match.create_from_set
fix match spec
fix more specs
and now these specs work like a charm
validate teams and matches
fix spec dependent on order of elements in array
fix league badges spec to respect the new validations on teams and maths

using all possible combinations of users and matches creates matches
with duplicate players on both sides
fix league teams spec to respect the new validations on teams and maths

using all possible combinations of users and matches creates matches
with duplicate players on both sides
Merge pull request #95 from railslove/refactor_create_match

Refactor create match