Propagate context and ensure git commands run in request context (#17868)

This PR continues the work in #17125 by progressively ensuring that git
commands run within the request context.

This now means that the if there is a git repo already open in the context it will be used instead of reopening it.

Signed-off-by: Andrew Thornton <art27@cantab.net>

routers/web/feed/convert.go

@@ -180,7 +180,7 @@ func feedActionsToFeedItems(ctx *context.Context, actions []*models.Action) (ite
 					desc += fmt.Sprintf("<a href=\"%s\">%s</a>\n%s",
 						html.EscapeString(fmt.Sprintf("%s/commit/%s", act.GetRepoLink(), commit.Sha1)),
 						commit.Sha1,
-						templates.RenderCommitMessage(commit.Message, repoLink, nil),
+						templates.RenderCommitMessage(ctx, commit.Message, repoLink, nil),
 					)
 				}