Make footer links editable

[desmondmorris]

What's this PR do?

• Provides UI for editing footer links via the theme settings form
• Provides a UI for toggling social links
• Modifies footer theme function to accept link and social variables
• Updates the theme footer call in preprocess_page adding the social and links variables from theme settings
• Provides default settings via the theme info file to prevent disaster.

We will need to revisit and re-org this theme-settings form as it is quickly growing. A proper gameplan/rules may be worth thinking about @DFurnes

Where should the reviewer start?

1. Footer.tpl.php - https://github.com/desmondmorris/dosomething/blob/footer-funtime-nbd/lib/themes/dosomething/paraneue_dosomething/templates/system/partials/footer.tpl.php
2. Footer theme function - https://github.com/desmondmorris/dosomething/blob/footer-funtime-nbd/lib/themes/dosomething/paraneue_dosomething/includes/theme.inc#L30-L45
3. Preprocessor to stuff vars into the template - https://github.com/desmondmorris/dosomething/blob/footer-funtime-nbd/lib/themes/dosomething/paraneue_dosomething/includes/preprocess.inc#L35-L62

How should this be manually tested?

1. Checkout my branch
2. Clear cache
3. Visit the admin theme settings for paraneue dosomething. Toggle social links. Visit home and confirm the enabled/disabled social icons in the footer are represented properly
4. Return to the admin page and update the footer links by overriding the column headers, links and class values. Take note to the link formatting (Link Text|http://url.com)

Any background context you want to provide?

This is the starting point to making the footer completely manageable via theme settings.

What are the relevant tickets?

Fixes #2092

Screenshots (if appropriate)

Super primitive link adding capabilities: Should be good enough for now

cc: @weerd @DFurnes @aaronschachter - its not particularly artisanal, but its a start. chime in please

[aaronschachter]

I'm not crazy about using the paths as the input here, it'd be nicer to use node/[nid]. Even though you are using the l function in the preprocess, i believe this would break things if the path changes.

[desmondmorris]

+1

[angaither]

Also, fixes #1321

[aaronschachter]

Looks good to me 👍

[DFurnes]

Only seeing the first link in each heading when I test on my local:

Looks like the \n escape characters from the default values aren't getting parsed correctly?

[DFurnes]

Looks good once I manually added the line breaks in the theme settings.

[desmondmorris]

@aaronschachter @DFurnes that should do the trick.

[DFurnes]

Looks good! 👍