Made a shape component so shapes can be scaled and filled
Fixed the svg documents so they scale in <object> tags
Created a shape template for the presentation generator
Inlined shape SVGs to allow different fills and such
Fixed pacman height
Color chooser for shapes
Can choose the fill color for shapes
Added gothic, fixed pressstart in chrome
Added fonts to bespoke
Strips formatting from text before pasting it from the clipboard

GH-231
Uses 'insertText' instead of fiddling with ranges when pasting text

This allows the browser's native undo to work on pasted text.

gh-231
Clears undo history for codemirror when switching slides