Simplify Composer buttons (#7678)

* Render a CollapsibleButton's children (needed by UploadButton)

* Make UploadButton ready to live inside an overflow menu

* Always show overflow menu in composer: main buttons are emoji and attach

* Re-order composer buttons as per design

* Re-word composer button captions to be simple nouns

* Don't rotate More options button when clicked

* Move the composer menu and dialogs 16px in from right

* Reduce shadow on composer More menu

* From review: remove else clause

* From review: take input out of button

* Update test snapshots

* Update snapshots

src/components/views/location/LocationButton.tsx

@@ -72,13 +72,11 @@ export const LocationButton: React.FC<IProps> = ({ roomId, sender, menuPosition
         },
     );
 
-    // TODO: replace ContextMenuTooltipButton with a unified representation of
-    // the header buttons and the right panel buttons
     return <React.Fragment>
         <CollapsibleButton
             className={className}
             onClick={openMenu}
-            title={_t("Share location")}
+            title={_t("Location")}
         />
 
         { contextMenu }