587 update icon library (#588)

* refactor: updated assets

* feat: added new icons

* feat: added new icons

* fix: corrected that file

* docs: added new icons

* refactor: optimized those files as well

* feat: added new icon

* refactor: inserted correctly written SVGs

* refactor: adapted this file

* refactor: added icon

* refactor: updated changed and added icons

* Update functional-icons~seat.json

* refactor: updated first stack of icon fonts

* refactor: removed the icons from this place

* refactor: don't use JS if it's a simple key/value topic

* refactor: simple icons content update

* refactor: simple icons content update

* feat: added icons

* docs: added new icons

* refactor: updated icon font

* refactor: changed icons contents

* feat: added icon

* feat: added new icons

* docs: added relevant entries

* feat: updated AV fonts

* feat: updated feature fonts

* fix: corrected fonts

* fix: corrected glyphs

* refactor: regenerated those fonts

Author: mfranzke