revamp UI + show oncall/group

Summary:
Redesigns the bug reporting dialog:
- show information from `package.json`'s `bugs` field, where we can link to support groups or name oncalls.
- adds show/hide animation
- uses new button style

Reviewed By: jknoxville

Differential Revision: D13417287

fbshipit-source-id: 2948794e9b1f42bbd895981d5e4b0578a9b8ee2e

flow-typed/npm/react-transition-group_v2.x.x.js

@@ -0,0 +1,68 @@
+// flow-typed signature: 896bbb51b1a943fefff583786cd4d0c0
+// flow-typed version: b6c24caf38/react-transition-group_v2.x.x/flow_>=v0.60.x
+
+// @flow
+
+declare module 'react-transition-group' {
+  declare export type CSSTransitionClassNames = {
+    appear?: string,
+    appearActive?: string,
+    enter?: string,
+    enterActive?: string,
+    enterDone?: string,
+    exit?: string,
+    exitActive?: string,
+    exitDone?: string,
+  };
+
+  declare export type TransitionStatus = 'entering' | 'entered' | 'exiting' | 'exited' | 'unmounted';
+
+  declare export type EndHandler = (node: HTMLElement, done: () => void) => void;
+  declare export type EnterHandler = (node: HTMLElement, isAppearing: boolean) => void;
+  declare export type ExitHandler = (node: HTMLElement) => void;
+
+  declare type TransitionActions = {
+    appear?: boolean;
+    enter?: boolean;
+    exit?: boolean;
+  }
+
+  declare type TransitionProps = TransitionActions & {
+    mountOnEnter?: boolean,
+    unmountOnExit?: boolean,
+    onEnter?: EnterHandler,
+    onEntering?: EnterHandler,
+    onEntered?: EnterHandler,
+    onExit?: ExitHandler,
+    onExiting?: ExitHandler,
+    onExited?: ExitHandler,
+  } & ({
+    timeout: number | { enter?: number, exit?: number },
+    addEndListener?: null,
+  } | {
+    timeout?: number | { enter?: number, exit?: number },
+    addEndListener: EndHandler,
+  })
+
+  declare export class Transition extends React$Component<TransitionProps & {
+    in?: boolean,
+    children: ((status: TransitionStatus) => React$Node) | React$Node,
+  }> {}
+
+  declare export class TransitionGroup extends React$Component<TransitionActions & {
+    component?: React$ElementType | null,
+    children?: React$Node,
+    childFactory?: (child: React$Node) => React$Node,
+  }> {}
+
+  declare export class ReplaceTransition extends React$Component<TransitionProps & {
+    in: boolean,
+    children: React$Node,
+  }> {}
+
+  declare export class CSSTransition extends React$Component<TransitionProps & {
+    in?: boolean,
+    classNames: string | CSSTransitionClassNames,
+    children?: ((status: TransitionStatus) => React$Node) | React$Node,
+  }> {}
+}