models/repo: modify keyword search to include description for #4287 (#4548)

* Modified repository keyword search to include description for #4287

* Replacing Where with And for #4548

models/repo.go

@@ -1646,7 +1646,7 @@ func SearchRepositoryByName(opts *SearchRepoOptions) (repos []*Repository, _ int
 		}
 	}
 	if len(opts.Keyword) > 0 {
-		sess.And("repo.lower_name LIKE ?", "%"+strings.ToLower(opts.Keyword)+"%")
+		sess.And("repo.lower_name LIKE ? OR repo.description LIKE ?", "%"+strings.ToLower(opts.Keyword)+"%", "%"+strings.ToLower(opts.Keyword)+"%")
 	}
 	if opts.OwnerID > 0 {
 		sess.And("repo.owner_id = ?", opts.OwnerID)