Add personal information policy agreement.
Refactor indents.
Use hosting.rb for personal information policy setting.

and fix text.
Fix to set personal info policy setting valiable when user/create failed.
Add new line to end of file.
Delete personal_info_policy.yml.
Add new line to end of file.
Add definition check to PersonalInfoPolicySetting for safe.
Move personal_info_policy_setting.rb to lib/.
Add encoding comment for utf-8.
Merge pull request #19 from upinetree/personal_info_policy

Personal info policy