fix(calendar): support safari to accept yyyy-mm-dd format

After implementing #1462, a pure given date in yyyy-mm-dd format did not work in safari anymore , because safari does not handle the internal converted date of yyyy-mm-dd 00:00:00

This PR now changes the dashes to slashes, so the internal result is yyyy/mm/dd 00:00:00, which is supported in every browser

Author: lubber-de

src/definitions/modules/calendar.js

@@ -1468,7 +1468,7 @@ $.fn.calendar.settings = {
         return null;
       }
       if(text.match(/^[0-9]{4}[\/\-\.][0-9]{2}[\/\-\.][0-9]{2}$/)){
-        text += ' 00:00:00';
+        text = text.replace(/[\/\-\.]/g,'/') + ' 00:00:00';
       }
       // Reverse date and month in some cases
       text = settings.monthFirst || !text.match(/^[0-9]{2}[\/\-\.]/) ? text : text.replace(/[\/\-\.]/g,'/').replace(/([0-9]+)\/([0-9]+)/,'$2/$1');