fix QR code
noone ever paid me to race triathlons!!
Merge branch 'master' into gh-pages
add VM descriptions to OVF
fix truncation of image name in grub
fix Makefile to rebuild box when .vmdk changes
allow overridding TMPFS_SIZE
allow disabling use of tmpfs via NO_TMPFS=1

Despite significantly reducing the build time, tmpfs does
seem prone to kernel bugs, so better make it optional.
eliminate duplication between box creation Makefiles
add main() to allow full refactoring
eliminate duplication between build-image.sh files
rename admin node image name in grub for clarity
switch from IDE to SCSI disks and add DRBD
generate config.xml from template

This allows us to eliminate hardcoding of paths within config.xml.
Drop ugly 4px border around images

Visually distracting and serves no real purpose.
Add overview of SUSE Cloud
Add shellinabox startup script and CSS

Connect to a screen sesssion with "screen -xR" from shellinaboxd.
Scale images and iframes to full slide size
Reduce shellinabox font size by 2pt, increase line spacing a bit
make DRBD disk larger and first

It needs to be at least 2GB since database and rabbit both need 1GB
until we support floating sizes.  It needs to be first because the
disk claiming code isn't particularly cunning yet.