appy.pod: bugfix in html2odt: in some situations, while using stylesMappings, some empty tags were present in the result, producing a superflous empty paragraph; bugfix while importing PNG files under Windows; appy.gen: began to implement a new global Appy-specific page template and styles.

pod/doc_importers.py

@@ -145,7 +145,7 @@ pxToCm = 44.173513561
 def getSize(filePath, fileType):
     '''Gets the size of an image by reading first bytes.'''
     x, y = (None, None)
-    f = file(filePath)
+    f = file(filePath, 'rb')
     if fileType in jpgTypes:
         # Dummy read to skip header ID
         f.read(2)