Move some pages to development section

[sagikazarmark]

This PR moves some development pages to a new section called development.

Some remaining tasks:

• There is no actual content on the development page (yet? maybe there should be?), so it shouldn't show up in the side menu as a link
• Development should show up as the last section in the menu
• Contributing should be moved here as soon as Update contributing.md #69 is merged

@nate-double-u can you help me out here? I'm not a huge Hugo expert as you are. ;)

[nate-double-u]

The location of menu items on the sidebar is based on the weight value in each page's frontmatter. I've revised all the frontmatter weight values to make it clearer what the groups are, and where each page should sit in the menu. (Sorry for inflating the files changed count!).

I also fixed an issue where "On this page:" was showing up even if the toc frontmatter variable was set to false.

[nate-double-u]

There is no actual content on the development page (yet? maybe there should be?), so it shouldn't show up in the side menu as a link

This may be a bigger issue. We are using the section-nav.html file to build this component, and it's not doing any checks for content in the pages that it's using to build the menu.

I've only just started using Hugo myself, but now I'm curious if there is a way of checking for empty files -- if we can check, then we can render that menu content a little differently. My usual workaround has been to add content to those top-level menu pages 😅️

[sagikazarmark]

This may be a bigger issue. We are using the section-nav.html file to build this component, and it's not doing any checks for content in the pages that it's using to build the menu.

It doesn't matter that much. We can write some random text about "This section explains how you can....blahblah".

[nate-double-u]

We can write some random text about "This section explains how you can....blahblah".

This is definitely the easier solution 😉️

[nate-double-u]

I'll keep thinking on this menu issue though, this is going to come up more and more as the Hugo Netlify Template Starter gets used. If we implement a solution there I'll look at merging it downstream.

[nate-double-u]

I think that the default sort is alphabetical when files have the same weight.
dev-integration-tests.md and dev-releases.md both have a weight of 3100 set. I'd suggest being more explicit about the weights, so even if you want alphabetical sorting, I'd set the weights to reflect that.
(lower weight gets higher precedence)

[sagikazarmark]

I think this is ready to be merged. Further improvements can be done in additional PRs.

[nate-double-u]

One minor nit, otherwise LGTM

[nate-double-u]

At some point we may want to put a list of the development pages on this page. We could probably write a partial to build the list for us automatically.

[sagikazarmark]

Sounds good to me.

[sagikazarmark]

Thanks for the review @nate-double-u