ajax element adding

for now the elements just disappear if it was added
Merge branch 'master' of github.com:lad1337/XDM
version bump to 0.5.6
With this patch, pbs is able to launch programs correctly on windows without specifying the .exe extension
Patch lib.pbs to add exit_code
Merge pull request #51 from mjc/patch-pbs-to-look-for-exe-extension

Patch lib.pbs to look for .exe extension (fixes pbs on windows)