Update jekyll-toc to v1.0.5

Allow heading levels 1-6 in table of contents

Adjust minimum and maximum levels to allow all headings and fix CSS to style indentation and nested lists properly in jekyll-toc and Kramdown generated table of contents.

Fixes #1782

Reduce padding and adjust toc `font-size`

Fit more text to handle indentation better.

Ref: #1782

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Fix: use relative links for menu items when possible (#1783) (#1784)

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Fixing scaling issue w. emoji in Sidebar Author Profile (#1780)

* Fixing scaling issue w. emoji in Sidebar Author Profile

Had the same issue as in mmistakes#1554

So should there be more demand for having emojis in sidebar, this style change fixes it

* Fix indendation and nesting

Adjust height of navigation toggle

Update Staticman commit message to include name

Switch `$nav-height` to a relative unit

Increase navigation min-height

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Increase font-size to improve readability

Use sentence case for better readability

Adjust feature row spacing and font-sizes

Style archive links with appropriate link color

Improve side navigation spacing in relation to masthead

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Add `{{ content }}` to `home` layout (#1775)

* Add `{{ content }}` to `home` layout

Allow the author to add content which will appear above the list of
recent posts. This also allows the `home` layout to be extended.

Add text to index.html in tests to indicate that the content appears in
the correct spot.

* Add paragraph markup

Since this is a HTML file, proper paragraph markup is needed.

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