This if the 2nd PR as part of the of the Align components in Fleet UI with design system in Figma #539
These changes **refactor the spacing and font sizes** used by the frontend.
- Change the scss variables in `padding.scss` and `fonts.scss`.
- Replace custom styles with the new variables throughout all stylesheets.
- This if the 1st PR as part of the of the Align components in Fleet UI with design system in Figma #539
- These changes replace all the color variables in /styles/var/colors.scss with new colors and naming convention used in Figma.
* use new data table in user manage page'
* remove default empty array hiddenColumns props, was causing render performance problems
* remove unused tooltip in hostcontainer
* add search to user manage table
* add query params to user GET requests
* move createUserForm closer to user management page
* starting to implement create user modal
* starting to add team checking functionality to create user
* styling of select team form
* changing logic for selectedTeamsForm, simplifying
* updated SelectedTeamsForm to handle own state and pass back relevant state to parent
* created reusable infobanner component and use it in osquery options page
* use infobanner in createuserform
* create new Radio component and use in createuserform
* create new Radio component and use in createuserform
* added new radio buttons to createUserForm
* finish custom radio button styling
* finish styling of radio in createUserForm
* fix and add entities/users#loadAll tests
* remove unneeded tests and updated broken ones on UserManagementPage
* remove unused modules
