[4.1] Tasks manager

[brianteeman]

We stopped using the term "manager" several years ago.

This PR updates some strings to reflect that and removes several unused strings

[chmst]

I have tested this item ✅ successfully on d8219c8

Code review

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[RickR2H]

I have tested this item ✅ successfully on d8219c8

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[RickR2H]

RTC

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[khu5h1]

I have tested this item ✅ successfully on d8219c8

Code review

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[bembelimen]

Thx

[brianteeman]

Thanks