Update check is unreliable

[Rukenshia]

The update check is set to work with a timeout of 400ms. A lot of times, this means an update check will never be completed based on the users' internet connection.

To make the update process more reliable, think about adding the following:

• Store a timestamp of when we last checked for a new version in the config file
• After a certain amount of time has passed (7 days?), check for a new version and store the new timestamp

This way we keep unnecessary update checks to a minimum and ensure that a new version will be checked for without depending on the users internet connection.