add ability to set css class to sortable tables. Make certificates table certificates class

webui/src/main/js/certificates.js

@@ -98,6 +98,7 @@ class CertificateResponse {
 		else if (params.order == "ascending")
 			newOrder = "descending"
 		var table = new Table(["Issuer", "Name", "Timestamp", "Import"], "sort", params.key, newOrder, this.divId)
+		table.setCSSClass("certificates")
 		
 		var i
 		for (i = 0; i < this.certificates.length; i++) {

webui/src/main/js/tables.js

@@ -39,14 +39,23 @@ class Table {
 		this.rows = []
 		this.key = key
 		this.descending = descending
+		this.cssClass = null
 	}
 	
 	addRow(mapping) {
 		this.rows.push(mapping)
 	}
 	
+	setCSSClass(cssClass) {
+		this.cssClass = cssClass
+	}
+	
 	render() {
-		var html = "<table><thead><tr>"
+		var html = "<table>"
+		if (this.cssClass != null) {
+			html = "<table class='" + this.cssClass + "'>"
+		}
+		html += "<thead><tr>"
 		var i
 		for (i = 0;i < this.columns.length; i++) {
 			if (this.columns[i].key == this.key)