Add grid view, image to tag (#641)

* Add grid view for tags
* Add tag page
* Import/export tags
* Add tag name uniqueness checks
* Fix styling on missing marker previews
* Add trace loglevel
* Add SQL trace
* Add filter options for tags
* Add tag sort by options
* Add tag page keyboard shortcuts

pkg/logger/logger.go

@@ -65,6 +65,8 @@ func logLevelFromString(level string) logrus.Level {
 		ret = logrus.WarnLevel
 	} else if level == "Error" {
 		ret = logrus.ErrorLevel
+	} else if level == "Trace" {
+		ret = logrus.TraceLevel
 	}
 
 	return ret
@@ -178,6 +180,15 @@ func Trace(args ...interface{}) {
 	logger.Trace(args...)
 }
 
+func Tracef(format string, args ...interface{}) {
+	logger.Tracef(format, args...)
+	l := &LogItem{
+		Type:    "trace",
+		Message: fmt.Sprintf(format, args...),
+	}
+	addLogItem(l)
+}
+
 func Debug(args ...interface{}) {
 	logger.Debug(args...)
 	l := &LogItem{