x22 CGM page decoding: Page fetching is writing too many timestamps

[tmecklem]

When the cgm page decoding algorithm detects that a page doesn't have a reliable sensor timestamp for forward looking offset, it needs to send a command to add a sensor timestamp to the glucose history page. Something in that code is incorrectly setting a new timestamp repeatedly in some circumstances. This causes glucose history pages to fill up more quickly and adds more page fetching that lessens battery life and reliability.

An example of the problem: https://diagcare.herokuapp.com/cgm_pages/DE0B68E27914E6EC8E211624D3C00CE6456164E8

[tmecklem]

This may be caused by some experimental code in my branch of Loop and not RileyLink iOS code. Still investigating.

[tmecklem]

#296

d10dfd2#diff-bf2d04fbde756ea81dd46dafafbdacddR665

[tmecklem]

This has been fixed.