Resolve "Set title of 404 page to something general"

Closes #14

See merge request fachschaft/wp-theme!18

Cherry pick unified things

See merge request fachschaft/wp-theme!16

Clean functions.php

See merge request fachschaft/wp-theme!15

Improve documentation comments

See merge request fachschaft/wp-theme!14

Resolve "Page display in search engine results could be optimized (SEO)"

See merge request fachschaft/wp-theme!5

Resolve "Pages break on screens that are "too small""

Closes #8

See merge request fachschaft/wp-theme!10

So they won't break menu and footer if they decide to scroll

Add right padding for first paragraph after blockquote

See merge request fachschaft/wp-theme!9

Resolve "Use proper capitalization for menu pages"

Closes #7

See merge request fachschaft/wp-theme!8

Make content layout consistent

Closes #5

See merge request fachschaft/wp-theme!6

Add custom style for blockquotes

See merge request fachschaft/wp-theme!7