Wrong Link when referencing a commit hash on README.md

[krombel]

• Gitea version (or commit ref): 1.5.0+rc2-2-g5a7830e0e

• Can you reproduce the bug at https://try.gitea.io:

  • Yes (provide example URL)
  • No (Bad Gateway)
  • Not relevant

Description

When adding a commit hash to README.md the hash gets linkyfied to
http://host/testOrg/testRepo1/src/branch/master/commit/<commitID> instead of
http://host/testOrg/testRepo1/commit/<commitID>

[SagePtr]

Also, in /api/v1/markdown preview (while editing file through web), not only for commit references wrong link href is generated, but for issue links too.
Example markdown:

# test

Commit 056dd42

Issue #1

Result is:

<h1>test</h1>

<p>Commit <a href="https://{domain}/{user}/{repo}/src/branch/master/commit/056dd42" rel="nofollow">056dd42</a></p>

<p>Issue <a href="https://{domain}/{user}/{repo}/src/branch/master/issues/1" rel="nofollow">#1</a></p>

Should be:

<h1>test</h1>

<p>Commit <a href="https://{domain}/{user}/{repo}/commit/056dd42" rel="nofollow">056dd42</a></p>

<p>Issue <a href="https://{domain}/{user}/{repo}/issues/1" rel="nofollow">#1</a></p>

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs during the next 2 weeks. Thank you for your contributions.

[lunny]

Since #4545 moved to 1.9.0, move this to 1.9.0 too.