Merge remote-tracking branch 'origin/master' into scrutinizer_fixes

* origin/master:
  Ask if a self-signed certificate is being used. [skip ci]
  Add issue and pull request templates.
  Update inline comments for hook.php and getUpdatesCLI.php Make sure that logging is set directly after Telegram object initialisation. (thanks @jacklul for pointing this out) Proofread and update utils.md file.
  Update readme and examples for enableAdmin(s) and add an extra test for string numbers.