changed composer to require-dev codeception
Added to the basic app, fixed config, added to core commands.
added .travis.yml to basic app

issue #1744
Reverted config change

change was made in 0d263a12a9dbf3f0cb8569db40f0581dc002285b

issue #1744
alias fixed
Merge pull request #1759 from Ragazzo/fixtures_controller_improvements

Added to the basic app, fixed config, added to core commands.
Basic app: DB configuration in separated file
moved dev requirements to require-dev in app composer.json

fixes #1736
Merge pull request #1761 from lucianobaraglia/master

Basic app: DB configuration in separated file
Mergeando