remove .old file from the repo
Cosmetic improvements to question comparisons.  Also add the students overall percent correct when they are identifiable by login or cookie.
Make master_url and master_app configurable in ignored file.
Bug fix:  missing % in formatted string
Bug fix:  pavement was not picking up paverconfig.py correctly.
enable Sphinx Bootstrap theme for thinkcspy
use bootstrap button classes
more Bootstrap integration
add button for links dropdown menu
add dropdown links menu to navbar
more Runestone links, Bootstrap integration
links menu CSS tweaks
remove global TOC menu and add link to TOC to dropdown links
fix instructors link
initial add of social buttons. They will need to be moved/tweaked still as the fixed position obscures text when the screen is small
putting social media buttons in footer
add share.js
layout tweaks for the social media bar
use bootstrap green button for 'check me' questions
increase top and bottom margins on buttons