fix column width change

Author: Skybladev2

gui/builtinViewColumns/omega.py

@@ -26,8 +26,7 @@ class Omega(ViewColumn):
 
     def __init__(self, fittingView, params):
         ViewColumn.__init__(self, fittingView)
-        self.size = 16
-        self.maxsize = self.size
+        self.size = 20
         self.mask = wx.LIST_MASK_IMAGE
         self.columnText = "\u03A9"