ignore image subdirectories / symlinks
remove kernel-source rpm after guest additions built
fix check for success of vbox guest additions installation
strip some nice-to-have packages to reduce footprint

Of course emacs is totally awesome, but we really want this
to be as small as possible :-(  It can always be installed
later.  Similarly with other packages.
patch crmsh to fix bnc#877484

https://bugzilla.novell.com/show_bug.cgi?id=877484
slide changes
Remove ugly shadow from OpenStack logo
Add proper talk title
Remove background from images

Remove the semitransparent background from images and just keep
the box shadow.
Merge branch 'master' into gh-pages