make suitable for for RegExp constructor

assets/checksums.txt

@@ -1,7 +1,7 @@
 39c6f45e6a3d4ec664d24fa9cc5869dc assets/ublock/thirdparty-lists.txt
 543a11c66e8ebda22e9817552da9d3b8 assets/ublock/privacy.txt
 41c57534508cde61b7b5af1279d8b363 assets/ublock/filters.txt
-799fa7a31f111f19d5451dc4d610bebe assets/ublock/mirror-candidates.txt
+675136acb5027b434b2c2568575c2f26 assets/ublock/mirror-candidates.txt
 19e25ce60f7b9e470c110334506b5e15 assets/ublock/filter-lists.json
 132b3ecc9da8a68c3faf740c00af734b assets/thirdparties/adblock-plus-japanese-filter.googlecode.com/hg/abp_jp.txt
 94c0a3eab74c42783855f07b22a429cf assets/thirdparties/home.fredfiber.no/langsholt/adblock.txt

assets/ublock/mirror-candidates.txt

@@ -1,25 +1,25 @@
 ajax.googleapis.com
-    /^ajax\.googleapis\.com\/ajax\/libs\//
+    ^ajax\.googleapis\.com/ajax/libs/
 fonts.googleapis.com
-    /^fonts\.googleapis\.com/
+    ^fonts\.googleapis\.com
 fonts.gstatic.com
-    /^fonts\.gstatic\.com/
+    ^fonts\.gstatic\.com
 cdnjs.cloudflare.com
-    /^cdnjs\.cloudflare\.com\/ajax\/libs\//
+    ^cdnjs\.cloudflare\.com/ajax/libs/
 code.jquery.com
-    /^code\.jquery\.com/
+    ^code\.jquery\.com
 s0.2mdn.net
-    /[^\\]*2mdn\.net\/instream\/html5\/ima3\.js/
+    [^\\]*2mdn\.net/instream/html5/ima3\.js
 www.googletagservices.com
-    /www\.googletagservices\.com\/tag\/js\/gpt\.js/
+    www\.googletagservices\.com/tag/js/gpt\.js
 maxcdn.bootstrapcdn.com
-    /^maxcdn\.bootstrapcdn\.com\/font-awesome\//
+    ^maxcdn\.bootstrapcdn\.com/font-awesome/
 netdna.bootstrapcdn.com
-    /[^\\]+\.bootstrapcdn\.com\/bootstrap\//
-    /[^\\]+\.bootstrapcdn\.com\/font-awesome\//
+    [^\\]+\.bootstrapcdn\.com/bootstrap/
+    [^\\]+\.bootstrapcdn\.com/font-awesome/
 b.scorecardresearch.com
-    /^b\.scorecardresearch\.com\/beacon\.js/
+    ^b\.scorecardresearch\.com/beacon\.js
 platform.twitter.com
-    /^platform\.twitter\.com\/widgets\.js/
+    ^platform\.twitter\.com/widgets\.js
 cdn.quilt.janrain.com
-    /^cdn\.quilt\.janrain\.com\//
+    ^cdn\.quilt\.janrain\.com/