plugin tab didn't resize content properly when new plugin link was in a new line

CHANGELOG

 minerva (12.3.1~beta.1) unstable; urgency=low
   * Bug fix: tair locus identifiers were used improperly - instead of id the
     name was used
+  * Bug fix: plugin tab header wasn't properly resized after adding plugins 
+    that introduced second line for tab selection (#758)
 
 minerva (13.1.0~beta.0) unstable; urgency=low
   * Feature: annotators are more flexible - you can define set of input and

frontend-js/src/main/js/plugin/PluginManager.js

@@ -70,6 +70,7 @@ PluginManager.prototype.getGuiUtils = function () {
  */
 PluginManager.prototype.addPlugin = function (options) {
   var self = this;
+  var oldLinkHeight = $(".nav-tabs", self.getElement()).height();
   $(self.getElement()).show();
   if (self._panels === undefined) {
     self.getGuiUtils().initTabContent(self);
@@ -78,7 +79,6 @@ PluginManager.prototype.addPlugin = function (options) {
 
   self.getGuiUtils().addTab(self, {name: "PLUGIN", content: element});
 
-  var oldLinkHeight = $(".nav-tabs", self.getElement()).height();
   var plugin;
   return Promise.resolve().then(function () {
     if (options instanceof Plugin) {