Converted cookie references over to localStorage (html5).

This saves HTTP requests and keeps the scope of the data local to the machine.
DOM storage has been around for awhile and basically any browser EXCEPT IE6/7 is supported (oh no!).
This means we could retire the use of the cookie/cookiejar/JSON js libs.. *However, I've left them alone for now.*

data/js/browser.js

@@ -137,9 +137,13 @@
                 };
         }
 
-        var initialDir, path, callback = null;
-        // if the text field is empty and we're given a key then populate it with the last browsed value from a cookie
-        if (options.key && options.field.val().length === 0 && (path = $.cookie('fileBrowser-' + options.key))) {
+        var initialDir, path, callback, ls = false;
+        // if the text field is empty and we're given a key then populate it with the last browsed value from localStorage
+        try { ls = !!(localStorage.getItem); } catch (e) {}
+        if (ls && options.key) {
+            path = localStorage['fileBrowser-' + options.key];
+        }
+        if (options.key && options.field.val().length === 0 && (path)) {
             options.field.val(path);
         }
 
@@ -147,13 +151,14 @@
             // store the browsed path to the associated text field
             options.field.val(path);
 
-            // use a cookie to remember for next time
-            if (options.key) {
-                $.cookie('fileBrowser-' + options.key, path);
+            // use a localStorage to remember for next time -- no ie6/7
+            if (ls && options.key) {
+                localStorage['fileBrowser-' + options.key] = path;
             }
+
         };
 
-        initialDir = options.field.val() || (options.key && $.cookie('fileBrowser-' + options.key)) || '';
+        initialDir = options.field.val() || (options.key && path) || '';
 
         options = $.extend(options, {initialDir: initialDir});