Move remote user URL to /@/

from /mention:

Ref T627

postrender.go

@@ -38,7 +38,7 @@ var (
 	titleElementReg = regexp.MustCompile("</?h[1-6]>")
 	hashtagReg      = regexp.MustCompile(`{{\[\[\|\|([^|]+)\|\|\]\]}}`)
 	markeddownReg   = regexp.MustCompile("<p>(.+)</p>")
-	mentionReg      = regexp.MustCompile(`@[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]+\b`)
+	mentionReg      = regexp.MustCompile(`@([A-Za-z0-9._%+-]+)(@[A-Za-z0-9.-]+\.[A-Za-z]+)\b`)
 )
 
 func (p *Post) formatContent(cfg *config.Config, c *Collection, isOwner bool) {
@@ -87,8 +87,8 @@ func applyMarkdownSpecial(data []byte, skipNoFollow bool, baseURL string, cfg *c
 			tagPrefix = "/read/t/"
 		}
 		md = []byte(hashtagReg.ReplaceAll(md, []byte("<a href=\""+tagPrefix+"$1\" class=\"hashtag\"><span>#</span><span class=\"p-category\">$1</span></a>")))
-		handlePrefix := cfg.App.Host + "/mention:"
-		md = []byte(mentionReg.ReplaceAll(md, []byte("<a href=\""+handlePrefix+"$0\" class=\"mention\">$0</a>")))
+		handlePrefix := cfg.App.Host + "/@/"
+		md = []byte(mentionReg.ReplaceAll(md, []byte("<a href=\""+handlePrefix+"$1$2\" class=\"mention\">@$1$2</a>")))
 	}
 	// Strip out bad HTML
 	policy := getSanitizationPolicy()

routes.go

@@ -71,7 +71,7 @@ func InitRoutes(apper Apper, r *mux.Router) *mux.Router {
 	write.HandleFunc(niCfg.InfoURL, handler.LogHandlerFunc(http.HandlerFunc(ni.NodeInfo)))
 
 	// handle mentions
-	write.HandleFunc("/mention:{handle}", handler.Web(handleViewMention, UserLevelReader))
+	write.HandleFunc("/@/{handle}", handler.Web(handleViewMention, UserLevelReader))
 
 	configureSlackOauth(handler, write, apper.App())
 	configureWriteAsOauth(handler, write, apper.App())