Use the correct path for ui categories

This makes it possible to execute ./anaconda from a git checkout.
The problem is that paths looked like ./pyanaconda/ui/<intf>/ while
they should be ./pyanaconda/ui/. This is not a problem when running
/usr/sbin/anaconda because the defaults provided by getsitepackages()
make it possible to correctly initialize the UI.

Related: rhbz#1276372

pyanaconda/ui/gui/__init__.py

@@ -633,7 +633,7 @@ def __init__(self, storage, payload, instclass,
         ANACONDA_WINDOW_GROUP.add_window(self.mainWindow)
 
     basemask = "pyanaconda.ui"
-    basepath = os.path.dirname(__file__)
+    basepath = os.path.dirname(os.path.dirname(__file__))
     updatepath = "/tmp/updates/pyanaconda/ui"
     sitepackages = [os.path.join(dir, "pyanaconda", "ui")
                     for dir in site.getsitepackages()]

pyanaconda/ui/tui/__init__.py

@@ -104,7 +104,7 @@ def __init__(self, storage, payload, instclass,
         self.quitMessage = quitMessage
 
     basemask = "pyanaconda.ui"
-    basepath = os.path.dirname(__file__)
+    basepath = os.path.dirname(os.path.dirname(__file__))
     updatepath = "/tmp/updates/pyanaconda/ui"
     sitepackages = [os.path.join(dir, "pyanaconda", "ui")
                     for dir in site.getsitepackages()]