Copy to clipboard doesn't work properly in some browsers

[steffen-l]

We noticed the following issues with the following browsers:

• All browsers: Page is automatically scrolled when the button is hit and the text output is so long that it cannot be shown on one page.
• IE: Note "Copied!" appears even if copying to clipboard is refused by the user (and the text output is not copied accordingly)
• Safari (could be certain configuration): The text is not copied but the following error is thrown:
  "Popup does not fit within the boundaries of the viewport"
  …
  error
  error — vendor.js:9:30487
  position — vendor.js:9:26918
  position — vendor.js:9:26822
  position — vendor.js:9:26822
  position — vendor.js:9:26822
  position — vendor.js:9:26822
  position — vendor.js:9:26822
  position — vendor.js:9:26822
  position — vendor.js:9:26822
  position — vendor.js:9:26822
  position — vendor.js:9:26822
  position — vendor.js:9:26822
  position — vendor.js:9:26822
  position — vendor.js:9:26822
  position — vendor.js:9:26822
  position — vendor.js:9:26822
  position — vendor.js:9:26822
  show — vendor.js:9:19845
  invoke — vendor.js:9:31525
  (anonymous function) — vendor.js:9:31631
  each — vendor.js:1:16204
  each — vendor.js:1:14171
  popup — vendor.js:9:16649
  value — app.js:848
  (anonymous function) — app.js:767
  emit — vendor.js:5:18415
  handleResult — vendor.js:5:21340
  copyText — vendor.js:5:21139
  selectTarget — vendor.js:5:21019
  initSelection — vendor.js:5:19871
  e — vendor.js:5:19536
  onClick — vendor.js:5:24312
  (anonymous function) — vendor.js:5:24146"