modularize the remaining legacy ingame interface widgets

and consolidate chrome root initialization

mods/ts/chrome.yaml

@@ -6,7 +6,7 @@ chrome-gdi: chrome-gdi.png
 	tooltip-bg: 0,288,272,136
 	radar: 297,31,210,222
 
-power-gdi: chrome-gdi.png
+sidebar-bits: chrome-gdi.png
 	power-indicator: 187,4,4,7
 
 palette-gdi: chrome-gdi.png
@@ -43,9 +43,6 @@ chrome-nod: chrome-nod.png
 	tooltip-bg: 0,288,272,136
 	radar: 297,31,210,222
 
-power-nod: chrome-nod.png
-	power-indicator: 187,4,4,7
-
 palette-nod: chrome-nod.png
 	top: 297,288,201,9
 	dock-top: 498,274,14,23