add pretty-printers for byte-counts

www/common/common-util.js

@@ -81,5 +81,13 @@ define([], function () {
             .replace(/_+/g, '_');
     };
 
+    var bytesToMegabytes = Util.bytesToMegabytes = function (bytes) {
+        return Math.floor((bytes / (1024 * 1024) * 100)) / 100;
+    };
+
+    var bytesToKilobytes = Util.bytesToKilobytes = function (bytes) {
+        return Math.floor(bytes / 1024 * 100) / 100;
+    };
+
     return Util;
 });

www/common/cryptpad-common.js

@@ -63,6 +63,8 @@ define([
     var replaceHash = common.replaceHash = Util.replaceHash;
     var getHash = common.getHash = Util.getHash;
     var fixFileName = common.fixFileName = Util.fixFileName;
+    common.bytesToMegabytes = Util.bytesToMegabytes;
+    common.bytesToKilobytes = Util.bytesToKilobytes;
 
     // import hash utilities for export
     var createRandomHash = common.createRandomHash = Hash.createRandomHash;

www/settings/main.js

@@ -226,10 +226,6 @@ define([
         return $div;
     };
 
-    var bytesToMegabytes = function (bytes) {
-        return Math.floor((bytes / (1024 * 1024) * 100)) / 100;
-    };
-
     var createUsageButton = function (obj) {
         var proxy = obj.proxy;
 
@@ -252,7 +248,7 @@ define([
                     Cryptpad.alert(Messages.settings_pinningError);
                     return;
                 }
-                Cryptpad.alert(Messages._getKey('settings_usageAmount', [bytesToMegabytes(bytes)]));
+                Cryptpad.alert(Messages._getKey('settings_usageAmount', [Cryptpad.bytesToMegabytes(bytes)]));
             });
         })
         .appendTo($div);