Fix black background on Display resizing

Fixes: https://launchpad.net/bugs/696557

openlp/core/lib/imagemanager.py

@@ -86,8 +86,7 @@ class ImageManager(QtCore.QObject):
         for key in self._cache.keys():
             image = self._cache[key]
             image.dirty = True
-            fullpath = os.path.join(image.path, image.name)
-            image.image = resize_image(fullpath,
+            image.image = resize_image(image.path,
                 self.width, self.height)
         self._cache_dirty = True
         # only one thread please
@@ -165,4 +164,4 @@ class ImageManager(QtCore.QObject):
             image = self._cache[key]
             if image.dirty:
                 image.image_bytes = image_to_byte(image.image)
-                image.dirty = False
+                image.dirty = False

openlp/core/ui/maindisplay.py

@@ -198,7 +198,7 @@ class MainDisplay(DisplayWidget):
             The slide text to be displayed
         """
         log.debug(u'text to display')
-        # Wait for the webview to update before displayiong text.
+        # Wait for the webview to update before displaying text.
         while not self.loaded:
             Receiver.send_message(u'openlp_process_events')
         self.frame.evaluateJavaScript(u'show_text("%s")' % \