docs: Some JavaScript clean-up
docs: Some JavaScript clean-up

Don't use the global namespace, unify quotes and semicolons at the end of lines
and "use strict".

Signed-off-by: Martin Kletzander <e82f23e74d43760279ebcc505dac4ae70d5627d0@redhat.com>
Reviewed-by: Andrea Bolognani <3ada0bee826c753786fdbba72243dfba997094cf@redhat.com>

andreabolognani/libvirt,crobinso/libvirt,fabianfreyer/libvirt,jfehlig/libvirt,fabianfreyer/libvirt,nertpinx/libvirt,olafhering/libvirt,fabianfreyer/libvirt,fabianfreyer/libvirt,zippy2/libvirt,eskultety/libvirt,jfehlig/libvirt,libvirt/libvirt,fabianfreyer/libvirt,libvirt/libvirt,zippy2/libvirt,libvirt/libvirt,andreabolognani/libvirt,eskultety/libvirt,zippy2/libvirt,zippy2/libvirt,olafhering/libvirt,andreabolognani/libvirt,andreabolognani/libvirt,eskultety/libvirt,eskultety/libvirt,crobinso/libvirt,jardasgit/libvirt,jardasgit/libvirt,libvirt/libvirt,jardasgit/libvirt,nertpinx/libvirt,olafhering/libvirt,olafhering/libvirt,jardasgit/libvirt,nertpinx/libvirt,andreabolognani/libvirt,nertpinx/libvirt,jfehlig/libvirt,jfehlig/libvirt,nertpinx/libvirt,eskultety/libvirt,jardasgit/libvirt,crobinso/libvirt,crobinso/libvirt