Fix wrong "changing LAC" alerts

[He3556]

The characteristic of a true "changing LAC" alert is, that the LAC value of one certain cell is changing once or maybe a few times in short intervals (1-10 minutes).
But it makes no sense to raise the alarm when the LAC of many Cells are changing over the day. And that is what happens if the phone can't read the correct LAC or has timing problems in general. So we need to filter these (yellow) alarm if this conditions are true.

1.1. Maybe add a value "false changing LAC alarms present = True/False", to decide if the yellow alarm will really be shown on the display. We can discuss how this can be implemented.
(EventLog, i would leave it like it is, so we have the data of false alarm for research...)

Next problem will be - after the App is installed, it will still show the (false) yellow alarm until it detects more ch. LACs in other CellIDs and will switch to "false ch... = True"

1.2. We start with "false changing LAC alarms present = True" as default.
After 24hour "exploration time" and if there were no false alarms, we switch to "False"

I never got these false alarms so i can not check it with my device.

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[SecUpwN]

@He3556, thanks for proposing a fix. Please confirm that this is no duplicate of #91.

[He3556]

This should become a list of Smartphones, where this false Alarm happens.

Samsung s4mini GT-19195, Android 4.4.2 (thx to @ciarankilbride)
Samsung A5 (2016) Issue #879 might be another problem (stuck on the same CID)