use webrowser module to open URIs (had some difficulty with LaunchDefaultBrowser on OS X)

gui/mainFrame.py

@@ -30,6 +30,7 @@ from wx.lib.wordwrap import wordwrap
 import service
 import config
 import threading
+import webbrowser
 
 import gui.aboutData
 import gui.chromeTabs
@@ -374,10 +375,10 @@ class MainFrame(wx.Frame):
         dlg.ShowModal()
 
     def goWiki(self, event):
-        wx.LaunchDefaultBrowser('https://github.com/DarkFenX/Pyfa/wiki')
+        webbrowser.open('https://github.com/DarkFenX/Pyfa/wiki')
 
     def goForums(self, event):
-        wx.LaunchDefaultBrowser('https://forums.eveonline.com/default.aspx?g=posts&t=247609')
+        webbrowser.open('https://forums.eveonline.com/default.aspx?g=posts&t=247609')
 
     def registerMenu(self):
         menuBar = self.GetMenuBar()
@@ -506,7 +507,7 @@ class MainFrame(wx.Frame):
                 self.showCharacterMgmt(type=0)
             else:
                 uri = sCrest.startServer()
-                wx.LaunchDefaultBrowser(uri)
+                webbrowser.open(uri)
         else:
             dlg=CrestMgmt(self)
             dlg.Show()