TODO - Subsections, headings, and readability improvements

[jackjt8]

• The Controls headers used across User Interface can be considered redundant and unnecessary. It also increases depth for no real reason or benefit.
• Suggest renaming 2.5.0 controls to Upcoming Changes. At least until we figure out multi-versioning of some description.
• Longer pages, like Render Controls - Camera, should make more use of subsections with headers to further aid navigation around the page. for example presets & camera selection(?), position & orientation, projection, depth of field/focusing.
• We should remove/reduce line breaks, ie --- as they do look a bit messy. These exist throughout the docs so a careful comb is required.
• "The Postprocessing tab, which is the eighth tab in the left control panel," - Given the order and number of tabs changes often we probably shouldn't number them. As long as we are clear on the names of the tab this will reduce work.

[Peregrine05]

• I agree that the Controls headers are unnecessary, as the page is dedicated to controls.
• I'm currently working on separating the docs per Chunky release channel. There will be no 2.5.0 Snapshot controls section in each page.
• As to removing page separators, how about only using them to separate dialog box controls from the rest of the page?

[jackjt8]

Page separators for dialogue boxes may be fine. We will need to evaluate how it looks.