* 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
* remove hover effect from vim help modal
* remove bold font weight from active item in prefenreces tab bar
* remove margin from answer box to unify with rest of result page
* remove vim arrow
* add 1rem padding to results
* add 0.2rem left border to vim selected article
* set column gap to 1.2rem and make search bar in line with results
* put 10px border-radius selected article
* result article: 0.125rem margin on tablet and esktop; 1rem margin on phone
* url in article head is clickable
* url is bigger now 0.96em font
* url is now left floating on tablet and phone
* there is a 8px top and bottom margin on h3 result heading
* rework search form as grid layout
* remove various paddings and margins
* add logo and link to index to search form
* make categories bigger on phone