v1.1.4

* BUGFIXES
  * Fix rendering of external links (#2292) (#2315)
  * Fix deleted milestone bug (#1942) (#2300)
  * fix 500 error when view an issue which's milestone deleted (#2297) (#2299)
  * Fix SHA1 hash linking (#2143) (#2293)
  * back port from #1709 (#2291)
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