This also adds an option to enable editing *any* attribute

This also consolidates some stuff related to updating CSS properties
into a single function.

This allows for multiple filters to be applied simultaneously. This commit
also moves some misc stuff, like the help and donate buttons, into a new
info menu. This also fixes touches outside of a popout menu not causing
the menu to close.

Outlines are expensive to render, since they require a blur of
a drop shadow. They're still available, but the default is
now to just brighten them and turn them sepia

This mostly helps with mobile Safari

The click-test code skips the pixel test in Safari, since
drawing SVGs to a canvas is, apparently, a buggy mess.
This also adds a bunch of -webkit-user-select properties
to make things unselectable in Safari.

Previously, the buttons were only enabled with an unlocked y-axis.
Now, they can be used to adjust the ground position.

This also adjusts the settings-init process to fill in the saved
settings with setTimeout. It was trying to update the settings
dropdown before it was inserted into the document!

Buttons are now flat-looking. The view picker is now as wide as
the other elements. Presets have been moving to the menu. Settings are
padded differently. Menu buttons (just the popout menu) are now square.

This is just because it's holding non-ratio-related info now!

Forms allow for one entity to have multiple distinct sets of
views and sizes.

Entities can now be rotated. This does not affect
their height. For now, they can only be rotated by
45 degrees at a time. I will work out something nicer
later on.

Buttons/inputs/selects use the Coda font, and inputs
are more evenly sized

This can improve performance on less-powerful computers.