fix dropdown: add focus on search filter
refactor search filter: user size common variables
refactor select: add search filter and edit style
chore demo: update hljs on selects
chore demo: update file inputs hljs
chore demo: update tooltips hljs
chore demo: remove useless form-fields class
chore demo: update dialogs hljs
chore demo: update thumbnails hljs
chore demo: update scrollbar hljs
chore demo: update notifications hljs
chore demo: update progress hljs