Added reuse information (#782)

Signed-off-by: Philip Molares <philip.molares@udo.edu>

src/components/markdown-renderer/replace-components/image/frame.tsx

@@ -1,3 +1,9 @@
+/*
+SPDX-FileCopyrightText: 2020 The HedgeDoc developers (see AUTHORS file)
+
+SPDX-License-Identifier: AGPL-3.0-only
+*/
+
 import React, { Fragment, useState } from 'react'
 import { Modal } from 'react-bootstrap'
 import { ForkAwesomeIcon } from '../../../common/fork-awesome/fork-awesome-icon'

src/components/markdown-renderer/replace-components/image/image-frame.tsx

@@ -1,3 +1,9 @@
+/*
+SPDX-FileCopyrightText: 2020 The HedgeDoc developers (see AUTHORS file)
+
+SPDX-License-Identifier: AGPL-3.0-only
+*/
+
 import React, { useEffect, useState } from 'react'
 import { useSelector } from 'react-redux'
 import { getProxiedUrl } from '../../../../api/media'

src/components/markdown-renderer/replace-components/image/image-replacer.tsx

@@ -1,3 +1,9 @@
+/*
+SPDX-FileCopyrightText: 2020 The HedgeDoc developers (see AUTHORS file)
+
+SPDX-License-Identifier: AGPL-3.0-only
+*/
+
 import { DomElement } from 'domhandler'
 import React from 'react'
 import { ComponentReplacer } from '../ComponentReplacer'

src/components/markdown-renderer/replace-components/image/types.ts

@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2020 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 export interface ImageProxyResponse {
   src: string
 }