style: Pass at propagating (and enhancing) Button component throughout Superset (#10649)

* getting rid of weird focus/active outline ring

* Buttons... buttons _everywhere_

* linting

* Nixing views/CRUD/dataset/Button component

* fixing 2 typing errors

* fixing more TS errors

* prefer src path for include

* one more real button, one less CSS class

* one more "button" to "Button"

* Published Status is now a proper clickable Label

* nixing the CRUD button again

* touching up stories, with SupersetButton story

* SIP-34 button colors

* adding polished package to mix colors

* updating button colors to match Superset theme

* abstracting away from bootstrap-specific props (might pivot libraries soon!)

* more abstraction from bsStyle/bsSize props

* exchanging styles for a prop

* linting

* restoring feature flag to stock

* using src alias

* last <button> replacement

* this classname would never be applied

* more linting action

* fixing unsupported bsSize 'medium', and cta typing error

* more cta action

* unnecessary styles

* errant bsSize prop

* cleanup

* tweaks to make new New button work

* Linting

* fixing a couple tests

* fixing theme based test failure

* margin tweak for NEW button

* another fixed test

* another fixed test

* fixing two more tests

* fixing last broken tests.

* always be linting

* Adding tertiary/dashed buttons

* cleaning up QueryAndSave buttons

* fixing "link" button styles

* fixing/updating link button styles

* cta buttons on Modal component

* linting.

* exporting button story knobs, making ALL knobs safe for export.

* capitalizing a file... no big whoop

* Basic button tests

* renaming button - temporarily

* renaming file to fix capitalization issue

* passing theme through to a difficult popover.

* fixin' a newly busted unit test

* lint fixin'

* oops, shouldn't have changed this prop!

* adding a dive() to themedShallow, and fixing a cypress/jest test

* addressing lint stuff

* touching up stories, with SupersetButton story

* SIP-34 button colors

* updating button colors to match Superset theme

* abstracting away from bootstrap-specific props (might pivot libraries soon!)

* linting

* restoring feature flag to stock

* cleanup

* Linting

* renaming button - temporarily

* renaming file to fix capitalization issue

* oops, shouldn't have changed this prop!

* adding a dive() to themedShallow, and fixing a cypress/jest test

* addressing lint stuff

* nixing new modal button

* Fixing another popover/button issue that should break cypress

* lint ✨

* passing classNames through to new button (should fix some tests)

* cleaning unused classes, making cypress tests use data attrs

* fixin' the test

* fixing another class-based test with data-test attr

* no longer passing theme as prop to buttons in popovers... themeprovider is better

* outline/border tweaks!

superset-frontend/src/SqlLab/components/QueryTable.jsx

@@ -24,6 +24,7 @@ import { ProgressBar, Well } from 'react-bootstrap';
 import Label from 'src/components/Label';
 import { t } from '@superset-ui/translation';
 
+import Button from 'src/components/Button';
 import Link from '../../components/Link';
 import ResultSet from './ResultSet';
 import ModalTrigger from '../../components/ModalTrigger';
@@ -99,31 +100,34 @@ class QueryTable extends React.PureComponent {
           </div>
         );
         q.user = (
-          <button
-            className="btn btn-link btn-xs"
+          <Button
+            buttonSize="small"
+            buttonStyle="link"
             onClick={this.props.onUserClicked.bind(this, q.userId)}
           >
             {q.user}
-          </button>
+          </Button>
         );
         q.db = (
-          <button
-            className="btn btn-link btn-xs"
+          <Button
+            buttonSize="small"
+            buttonStyle="link"
             onClick={this.props.onDbClicked.bind(this, q.dbId)}
           >
             {q.db}
-          </button>
+          </Button>
         );
         q.started = moment(q.startDttm).format('HH:mm:ss');
         q.querylink = (
           <div style={{ width: '100px' }}>
-            <button
-              className="btn btn-link btn-xs"
+            <Button
+              buttonSize="small"
+              buttonStyle="link"
               onClick={this.openQuery.bind(this, q.queryId)}
             >
               <i className="fa fa-external-link m-r-3" />
               {t('Edit')}
-            </button>
+            </Button>
           </div>
         );
         q.sql = (