A bit hacky, since CLForm can't seem to initialize properly without
being part of a request. To avoid a reference-before-assignment error,
the INDEX variable is first initialized as a global in __init__.py. But
it is definitely faster. Repeated renders take around 2ms each. Reading
the cached value takes about 0.002ms.
Also split index() into index_get() and index_post(), since GET calls
always use the cached version, and POST calls never do.
Adjusted text sizes on mobile. New default variable syntax makes for more
consistent whitespace (allowing for simpler internal code). JS won't load
cookies if the company name is unchanged from the default.