Merge pull request #58 from Harvard-University-iCommons/feature/SM_ListOfUsers

Changes to display list of  user names in a new page on clicking  a section
Add a "dummy" link from reserves list LTI tool to iSites reserves tool that passes the course instance ID.  Set up a config variable that is the iSites tool url with a placeholder for the course instance id.  Initial rendering of link, if present, on LTI tool results page.  Some PEP-8 cleanup of views.py file.
Align the link for managing reserves lists
Merge pull request #59 from Harvard-University-iCommons/feature/SM_ListOfUsers

Feature/sm list of users
Merge branch 'develop' into feature/reserves_list_isites_link
Merge pull request #61 from Harvard-University-iCommons/feature/reserves_list_isites_link

Feature/reserves list isites link
Templates for viewing the members of a section
Merge branch 'develop' into feature/LTI_Templates