Merge pull request '增加topic变量' (#516) from fix-333 into V20211018

Reviewed-on: https://git.openi.org.cn/OpenI/aiforge/pulls/516
Reviewed-by: lewis <747342561@qq.com>

routers/home.go

@@ -176,6 +176,8 @@ func RenderRepoSearch(ctx *context.Context, opts *RepoSearchOptions) {
 		repo.Active = int64(repo.NumIssues) + int64(repo.NumPulls) + int64(repo.NumCommit)
 	}
 	ctx.Data["Keyword"] = keyword
+	ctx.Data["Topic"] = topic
+
 	ctx.Data["Total"] = count
 	ctx.Data["Repos"] = repos
 	ctx.Data["IsRepoIndexerEnabled"] = setting.Indexer.RepoIndexerEnabled