Log Message:
Update to 38.0.5

Changelog:
New: Keep track of articles and videos with Pocket
New: Clean formatting for articles and blog posts with Reader View
New: Share the active tab or window in a Hello conversation
Fixed: A race condition that would cause Firefox to stop painting when switching \ 
tabs (bug 1067470)
Fixed: Fixed graphics performance when using the built-in VGA driver on Windows \ 
7 (Bug 1165732)