Update various files, mostly for clarity. Other minor edits.

[Garrisonsan]

app_how_it_works.md: various edits for clarity, particularly surrounding RSSI (aim for a less technical audience)

app_settings_reference.md: Add note about anon mode requiring clean disconnect to reset node name, edit for clarity regarding RSSI filtering

app_wardriving_modes.md: add brief note about carpeater filtering

awards.md: Clarify that only Master/Global admins can create award types

duplicaterepeaterid.md: Since hybrid mode is the default/encouraged mode, clarify as much

index.md: Minor edit for grammar, add link to private repeaters section of layers.md

layers.md: Several edits for clarity in the table section detailing map colors and grid square data types, minor edits for grammar/clarity in companion noise floor calibration section

onboarding.md: Clarify that drawing a polygon is not required if a circle accurately depicts a mesh's operational area

[Garrisonsan]

@CSP-Tom @MrAlders0n Not sure if GH notifies you of PRs or not; just wanted to make sure you saw this sitting here