Better performance + "unlimitedStorage" permission

+ Changed the regex interpretation for better performance.
+ Also asked for "unlimitedStorage" permission to have enough space for user generated rules.

manifest.json

@@ -1,7 +1,7 @@
 {
     "manifest_version": 2,
     "name": "ClearURLs",
-    "version": "1.5a",
+    "version": "1.5.1a",
     "author": "Kevin R.",
     "description": "Remove tracking elements form URLs.",
     "homepage_url": "https://gitlab.com/KevinRoebert/ClearUrls",
@@ -50,7 +50,8 @@
         "webRequest",
         "webRequestBlocking",
         "storage",
-        "tabs"
+        "tabs",
+        "unlimitedStorage"
     ],
     "background": {
         "scripts": [