Defect 2280429 (#1416)

* autoscale and manual radiobuutton fixes

* alt text attribute for images

* Revert "alt text attribute for images"

This reverts commit 5a660551c6.

* alt text for decorative images

* sev2 accessibilitydefects in data explorer

* Revert "sev2 accessibilitydefects in data explorer"

This reverts commit b84d5b572c.

* Sev2 accessibilitydefects

* Revert "Sev2 accessibilitydefects"

This reverts commit a4e60f106c.

* accessibilitydefects-data explorer

* Accessibility sev-2 defects-2

* corrections for 2278347,2278096 and fix for 2264174

* corrections for 2278347,2278096 and fix for 2264174

* fix for defect 2276938

* wrong aria attibute used

* refresh, expand, collapse tree does not have proper label for screenreader

* wrong role is assigned to anchor link

* descriptive alt added for iconspresent for DATA and NOTEBOOK accordion headers

* Update CollapsedResourceTree.tsx

* Update ResourceTreeContainer.tsx

* Update ResourceTreeContainer.tsx

* Update TableEntity.tsx

* Update treeComponent.less

* Update MiddlePaneComponent.tsx

* Update PanelInfoErrorComponent.tsx

src/Explorer/Controls/Accordion/AccordionComponent.tsx

@@ -73,7 +73,7 @@ export class AccordionItemComponent extends React.Component<AccordionItemCompone
       <img
         className="expandCollapseIcon"
         src={this.state.isExpanded ? TriangleDownIcon : TriangleRightIcon}
-        alt="Hide"
+        alt={this.state.isExpanded ? `${this.props.title} hide` : `${this.props.title} expand`}
         tabIndex={0}
         role="button"
       />