* update search input form params; inspiried by whoogle
* remove autofocus from result page input form (JS impl. as well as input param)
-> autofocus on landing page still works only on desktop and tablet with JS impl.
* update landing page margins on mobile
* rework border and radius for search form to 0.8rem and outline
* remove positioning from autocomplete JS lib and use CSS impl.
* match search box and autocomplete width
* rework search form to a google like design on mobile
* fix settings icon display withg RTL on mobile on result page when search input is empty
* rework selection UI in pref (fix based on: 78643e9f43)
* moved search filters underneath categories
* cut params from url and replace / with ›
* make h3 and url in article bigger
* add safe search select to search filter (this will not override settings and only be valid while on result page in a session)
* make search form button not overlap each other when js is disabled
* 1rem padding around preview image and thumbnail in default article template
* update from ionicons-npm to ionicons ver.5
* drop the webfont built by grunt for icons
* built icons.html template for inlining icons with jinja2 into html
* update icon to use mostly the outline version
* add icons to categories and do not display them on mobile to save space
* remove all legacy ion icon font files from simple theme
* icons.html is added in this commit since make statc.build.restore requires git to know the file already
* cleanup error-dialog
