Add httpclient (2.3.4.1) gem to get contents

from remote by http protocol
Add Contents module to scrape html and hold result

to object, and use it for personal_info_policy
Change to use hosting.rb setting for timeout in contents module
Fix typo
Fix to check personal_info policy cache in crete action
Move show attr to module and check show flag before getting remote contents
Merge pull request #21 from yakitorii/read_remote_contents

Read remote contents