* fix 383 warnings C4996 (deprecated) with one single line change
* fix 5 'empty' warnings about invalid slots, not sure the remaining
slots serve any purpose though
* disable warnings C4127 and C4996 for thirdparty/google_analytics
* fix 30 warnings C4996 using the suggested alternatives available since
at least Qt 5.9, so won't break building against that
* change as requested in code review plus some more fixes using the same
idea
* fixing yet more warnings
* disable deprecation warnings in qoogle_analytics for MinGW too
although I believe maxOS and Linux may use those too. Easy to extend to
those, if need be.
* Fix qml runtime warnings exactly following the advice given by that
warning, but without really know what I'm doing here or whether that is
still backwards compatible to Qt 5.9.
* Use replacements as suggested, if available and no `endl` neded with
`qDebug()`
* fix 24 more
* 2 more
* 7 more (one only seen in DEBUG mode)
* Fix the `endl` warnings
* maybe more changes this way?
* Add all warnings C5999 or bigger to the ignore list for telemetry
with Qt 5.15 Beta 1 as avoiding only C26439, C26444,C 26452, C26495,
C26498, C26812 isn't possible
* fix 2 deprecation warning new with Qt 5.15 beta 1
* fix 4 new warnings and also Qt 5.12 builds, disable some dead code
* fix deprecation warnings new with Qt 5.15's MSVC 2019 integration and
revert some (`QNetworkReply::networkError()`) that Qt 5.15 beta 2
reverted too
* fix warning reg. obsolete operator < for QVariants
* revert changes needed prior to beta 3 And clarifying some earlier
changes
* mark ToDos
* fix warning reg QString()::null
* fix a 'regression' from a revert of an earlier change
b7b35643a1