Add reactions to issues/PR and comments (#2856)

modules/templates/helper.go

@@ -8,6 +8,7 @@ import (
 	"bytes"
 	"container/list"
 	"encoding/json"
+	"errors"
 	"fmt"
 	"html/template"
 	"mime"
@@ -162,6 +163,21 @@ func NewFuncMap() []template.FuncMap {
 			return setting.DisableGitHooks
 		},
 		"TrN": TrN,
+		"Dict": func(values ...interface{}) (map[string]interface{}, error) {
+			if len(values)%2 != 0 {
+				return nil, errors.New("invalid dict call")
+			}
+			dict := make(map[string]interface{}, len(values)/2)
+			for i := 0; i < len(values); i += 2 {
+				key, ok := values[i].(string)
+				if !ok {
+					return nil, errors.New("dict keys must be strings")
+				}
+				dict[key] = values[i+1]
+			}
+			return dict, nil
+		},
+		"Printf": fmt.Sprintf,
 	}}
 }