php comments added

Add styling for hr in wikipagefooter

SPR-762

Add wikipagefooter

implements SPR-762

fixed clicking links in sidebar

fixed broken closing tag

SPR-753: add ACT mode as node to breadcrumb

SPR-838: pixel search toggle vs. nav main ico

SPR-838: pixel meta box debug IE11

SPR-838: pixel breadcrumb home icon vs content toggle link

styled the menu button

SPR-838: pixel breadcrumb vs search toggle link

mobile handling of the sidebar SPR-840

SPR-838: pixel breadcrumb vs search input

SPR-754 make sidebar toggle a11y text translatable

made search toggle translatable

avoid empty ul

An empty UL is not valid in HTML, but since we don't know if LIs are
added later on by JavaScript, we add an invisible LI by default now.

SPR-838: pixel meta box

same border-color for breadcrumb and main content stripe

use a instead of h6 in navigation

this makes focusing and selecting in assistive technologies easier

make sidebar headers toggable via keyboard

fix alt pre/postfixes for logo

alt tags need to mention what kind of stugg is shown. It changes
depending on if it's liknked or not.

output newline after logo images

more styling for section edit buttons

moved the whole section editing and highlighting stuff to its own file.
also moved the edittable specific parts to their proper plugin file.

SPR-835 only show an icon until hover

SVG dispatch: allow passing ini colors without underscores

The surrounding underscores can be left out.