CORE-560 adding active state on search field and styling it

CORE-560 adding active state on search field and styling it
@Smotko I've transfered `keyup` function in `quick_search_controller.js`. It cannot be in `keypress` cause in that case, if you remove all content (characters) from input field it will remain active until you type in something and that is not behavior we need. Regarding that `filter` event, I couldn't transfer it to `quick_search_controller.js` cause it's not working. Not sure why but I cannot get active state on page load if value of input field exist. Can you please help me solve that. I've left `filter` event in application.js on line 1114 so if you can transfer it and make it work that would be awesome. The thing is, if user have search and he/she close tab, and open app again, and if that search is saved then we need active state on input field so that user will know that search is still on.