Merge pull request #121 from usersource/feature/single_page_iten_view

Feature/single page iten view
Merge pull request #122 from usersource/feature/single_page_iten_view

Feature/single page iten view
add 3 tabs for apps pick list
Merge pull request #123 from usersource/feature/single_page_iten_view

Feature/single page iten view
Merge pull request #124 from usersource/feature/enhance_picklist_for_about

Feature/enhance picklist for about
Merge pull request #125 from usersource/develop

sync with develop branch