Feature/sections sm1

This Pull request contains UI changes for section details. The following changes are included in section_details.html
1) Added UI design for empty section
2) Corrected the link to ‘All sections' in section_details.html
3) Displaying user role and user ID with appropriate  UI styles. 
The link url is 'create_section_form', but the link says 'All Sections'. Is the link text descriptive of the url action?