refactor to the pages/index view file, add spec for testing tags displaying
ensure that tags are assigned to be displayed in the view
add search_controller_spec, allow to perform searchs also by tag
add integration specs corresponding to the document tag search by title and tag
fix wrong styling, fix wrong implementation of foundation in the documents#show page
Merge pull request #13 from tangosource/feature/as-a-user-i-should-be-able-to-filter-documents-by-tags

tangosource/feature/as-a-user-i-should-be-able-to-filter-documents-by-tags