Time comparison isn't possible for encrypted timestamps, so `since` parameter isn't working in this case

[flyingapfopenguin]

When encryption is enabled, the android app pushes all point data encrypted to the server, also the timestamp:

https://github.com/bilde2910/Hauk/blob/6b3d8dcbec0c4f6e64d5b72966c16d7fff35177f/android/app/src/main/java/info/varden/hauk/http/LocationUpdatePacket.java#L72C17-L72C85

Is the data encrypted or not, the refresh web logic request updates via the since parameter, which, in the encrypted case, is compare to the result of floatval called on encrypted data:

https://github.com/bilde2910/Hauk/blob/6b3d8dcbec0c4f6e64d5b72966c16d7fff35177f/backend-php/include/inc.php#L771C22-L771C59

This is not working, since floatval seems to return 0.