[Keymap] Moar personal keymap and userspace tweaks (#7238)

* Enable link-time optimization

* Make RGB static gradient ranges shorter

* Shift Quefrency media keys to the right

* Shift KBD67 media keys to the right

* Move some 60% keys from function to adjust layer

* Set "extra" Lily58 keys to browser back/forward

* Remove Instant60 EEPROM hack after #6968

* Remove unnecessary bits from macropad keymaps

* Update KLE images

layouts/community/60_ansi_split_bs_rshift/bcat/readme.md

@@ -2,10 +2,10 @@
 
 This is a hybrid of an HHKB layout and a standard ANSI bottom row. It's nice if
 you want to fill out a 60% case with no blockers, or just really want a 6.25U
-spacebar. The arrow and navigation keys match a standard HHKB layout (using the
-Fn key next to the right shift key), but the media keys are centered around the
-WASD cluster instead of the usual HHKB layout. Additionally, the redundant Fn
-key on the bottom row activates an adjust layer to control RGB underglow.
+spacebar. The arrow and navigation keys match a standard HHKB layout using the
+Fn key next to the right shift key. Additionally, the redundant Fn key on the
+bottom row activates an adjust layer with controls for RGB underglow and
+backlight, as well as media keys centered around the ESDF cluster.
 
 ## Default layer
 
@@ -15,12 +15,12 @@ key on the bottom row activates an adjust layer to control RGB underglow.
 
 ## Function layer
 
-![Function layer layout](https://i.imgur.com/XT3AtDl.png)
+![Function layer layout](https://i.imgur.com/oLdVfn0.png)
 
 ([KLE](http://www.keyboard-layout-editor.com/#/gists/c7a55e75285d474b6301140eaf53f915))
 
 ## Adjust layer
 
-![Adjust layer layout](https://i.imgur.com/KxCtI50.png)
+![Adjust layer layout](https://i.imgur.com/bqC6QYS.png)
 
 ([KLE](http://www.keyboard-layout-editor.com/#/gists/6e1068e4f91bbacccaf5ac0acbeec79c))