Fixed: main mei-editor div now does not expand past the bottom of the screen

Had to temporarily incorporate some magic numbers to fix this, but I shall temporarily bear the wrath of Hankinson.

(resolving this is a bit lower on my to-do list but this is a dependable way to fix the bug for now and I'd rather this be usable by other people before)
New: icon creation is dynamic

-Fixed a few bugs I didn't realize existed with renaming files at the same time.
-Reorganized code to be more easily parseable by humans.
Fixed: URL bar no longer changes when tabs are switched

Nifty little line of built-in javascript.
New: rudimentary version of console exists.

Introduced a few more bugs that I'll look at tomorrow.