Feature: Add a version checker
Add a check to designer that looks if there is a newer version of OpenViBE available. The benefit to developers is that we can collect a geographical database of OpenViBE users.
- Have designer poll some http://openvibe/whatsnewest.php
- Compare the result string to the revision. If result is newer, give user a (one-time) popup informing of this and a link.
- Allow the user to change the update check frequency (each startup, weekly, never)
- The update check must NOT block or delay designer use if the web is down or the page is no longer available.
- In the whatsnewest.php, make an entry of the geographical location of the query to a db including a date.