-Add routes for graph and about pages
-Change in-glass.html to base.html base template
-Add child templates for current, graph, and about pages
-Add slashes to route decorators per Flask docs
-Rename in-glass.js and in-glass.css to main.css and main.js for semantic purposes
-Rename main.html to current.html to avoid confusion
-Update template/static references in in-glass.py