Corrected which icons went with which platform

src/platform/chrome/background.js

 	*/
 chrome.runtime.onMessage.addListener((request, sender, sendResponse) => {
 	let icons = request.killingStickies ? {
-			"19": 	"images/ASK_on_19.png",
-			"38": 	"images/ASK_on_38.png",
+			"16":	"images/ASK_on_16.png",
+			"32":	"images/ASK_on_32.png",
+			"48":	"images/ASK_on_48.png",
+			"128":	"images/ASK_on_128.png"
 	} : {
-			"19": 	"images/ASK_off_19.png",
-			"38": 	"images/ASK_off_38.png",
+			"16":	"images/ASK_off_16.png",
+			"32":	"images/ASK_off_32.png",
+			"48":	"images/ASK_off_48.png",
+			"128":	"images/ASK_off_128.png"
 	};
 	chrome.pageAction.setIcon({
 		path: icons,

src/platform/firefox/background.js

 	*/
 chrome.runtime.onMessage.addListener((request, sender, sendResponse) => {
 	let icons = request.killingStickies ? {
-			"48": 	"images/ASK_on_48.png",
-			"96": 	"images/ASK_on_96.png",
+			"19": 	"images/ASK_on_19.png",
+			"38": 	"images/ASK_on_38.png",
 	} : {
-			"48": 	"images/ASK_off_48.png",
-			"96": 	"images/ASK_off_96.png",
+			"19": 	"images/ASK_off_19.png",
+			"38": 	"images/ASK_off_38.png",
 	};
 	chrome.browserAction.setIcon({
 		path: icons,