make property names consistent

[wrex]

I just realized I never created a separate issue to track this.

I think it's best to do any naming changes prior to launching 2.0. Once we launch, we won't want to make any breaking changes (only additions).

Proposal:

• Since everything is currently a color, no -clr suffix is required. If we add filters or whatever, THEN add a suffix for the exceptions.

• Keep the order consistent (surface-inv rather than inverted surface)

• Shorter is better

Surfaces
--------
--ED-surface-1, --USER-surface-1                -> (unchanged)
--ED-surface-2, --USER-surface-2                -> (unchanged)
--ED-surface-3, --USER-surface-3                -> (unchanged)
--ED-surface-4, --USER-surface-4                -> (unchanged)

--ED-inverted-surface, --USER-inverted-surface  -> --ED-surface-inv, --USER-surface-inv

Text
----
--ED-text-clr, --USER-text-clr                  -> --ED-text, --USER-text
--ED-inverted-text, --USER-inverted-text        -> --ED-text-inv, --USER-text-inv
--ED-highlight-text, --USER-highlight-text      -> --ED-text-hl, --USER-text-hl
--ED-grayed-text, --USER-grayed-text            -> --ED-text-grayed, --USER-text-grayed

Brand, etc.
-----------
--ED-brand, --USER-brand -> (unchanged)
--ED-progress-clr, --USER-progress-clr          -> --ED-progress, --USER-progress
--ED-success-clr, --USER-success-clr            -> --ED-success, --USER-success
--ED-alert-clr, --USER-alert-clr                -> --ED-alert, --USER-alert

Item Types
----------
--ED-radical-clr, --USER-radical-clr            -> --ED-radical, --USER-radical
--ED-kanji-clr, --USER-kanji-clr                -> --ED-kanji, --USER-kanji
--ED-vocab-clr, --USER-vocab-clr                -> --ED-vocab, --USER-vocab

SRS stages
----------
--ED-apprentice-clr, --USER-apprentice-clr      -> --ED-apprentice, --USER-apprentice
--ED-guru-clr, --USER-guru-clr                  -> --ED-guru, --USER-guru
--ED-master-clr, --USER-master-clr              -> --ED-master, --USER-master
--ED-enlightened-clr, --USER-enlightened-clr    -> --ED-enlightened, --USER-enlightened
--ED-burned-clr, --USER-burned-clr              -> --ED-burned, --USER-burned

Reviews/lessons
---------------
--ED-meaning-clr, --USER-meaning-clr            -> --ED-meaning, --USER-meaning
--ED-reading-clr, --USER-reading-clr            -> --ED-reading, --USER-reading
--ED-lesson-clr, --USER-lesson-clr              -> --ED-lesson, --USER-lesson
--ED-review-clr, --USER-review-clr              -> --ED-review, --USER-review
--ED-correct, --USER-correct                    -> (unchanged)
--ED-incorrect, --USER-incorrect                ->  (unchanged)