Release v1.1.3

* BUGFIXES
  * Fix PR template error (#2008)
  * Fix markdown rendering (fix #1530) (#2043)
  * Fix missing less sources for oauth (backport #1288) (#2135)
  * Don't ignore gravatar error (#2138)
  * Fix diff of renamed and modified file (#2136)
  * Fix fast-forward PR bug (#2137)
  * Fix some security bugs
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