Improve page subheadings

[gtsiolis]

Problem to solve

Currently, page subheadings include a generic description of what the page includes. In the spirit of our design principles (form follows function (internal)), suing this space to provide an actual function or requirement for using the product could be better.

See relevant discussion (internal).

Proposal

Go through all page subheadings and make improvements that could make this element more useful or functional for users.

[stale]

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