Support TravisCI tests for multiple databases
Specify decimal scale

The default is 0 but we need floating point value for days_per_point in projects table
This made spec error happen on mysql and postgresql
Fix failure spec derived from sequential 'id'

The id has to be retrieved from the real object instead of depending
the order of creation of the objects because Postgresql does not
initialize the sequential number in each tests.
Fix exec command to use spring
Merge pull request #69 from irasally/fix-guard-setting

Fix exec command to use spring
Merge pull request #65 from kaznum/travis_multiple_db

Multiple DB for TravisCI
Fix spec ti test an ajax request
Merge pull request #71 from irasally/add-xhr

AJAX リクエストのテストを明確にする
Add item-copy modal view
Add category and sub_category selector
Add to copy story logic
Add category-cpoying and sub_category-cpoying
Add item-copying routes specs
Change adjust item condition
Add to item-copying controller-action specs
Rermove unused code
Remove duplicate logic
Merge pull request #72 from irasally/item-deep-copy

アイテム複製機能 #33
Change dst-item-params from raw-parameters to actionmodel
Add params validation