Disable urlseparator by default, for #319 (#747)

* Disable urlseparator by default

As explained in #319, this separator is too common in URLs and search strings to be a sensible default separator.
* When copying and pasting some content to look it up with some search engine (for instance a title or an address);
* A comma followed by spaces is also legitimate in a URL! For instance if you put some JSON as a GET parameter in a URL.

* Update NEWS: disable urlseparator by default

common/content/browser.js

@@ -57,7 +57,7 @@ const Browser = Module("browser", {
 
         options.add(["urlseparator"],
             "Set the separator regex used to separate multiple URL args",
-            "string", ",\\s");
+            "string", "");
 
         options.add(["yankencodedurl"],
             "Set the yank mode copying encoded URL",

vimperator/NEWS

@@ -1,7 +1,7 @@
 201x-xx-xx:
     * create README.md
     * fix search highlighting (hlsearch) in firefox 51
-
+    * disable urlseparator by default as its unexpected behaviour irritates users
 
 2017-02-01:
     * add option 'newtaburl' to set default URL in new tabs