* test(grants): list virtual machines

issue #710

* feat(grants): allow remove all machines

issue #710

* test(grants): check shutdown

issue #710

* fix(users): check remove admin (#745)

issue #744

* #629 clean (#735)

* [#629] [test] volatiles are removed from front

* [#629] [test] check volumes are removed

* [#629] check volumes are removed after shutdown

* [#629] force volume removal after shutdown of volatile

* [#629] test XML in extra data is there

* [#629] Allow forced virtual machine open

It will open even if there is no real virtual machine
in the VM

* [#629] store extra information of the virtual machine

Each different VM can have extra fields only for its kind

* fix: clean iptables even if domain removed

[#629]

* fix: remove domain even it is not known

[#629]

* wip(backend): remove disks from volatile clones

issue #629 wip

* feat(backup): clean temporary machines volumes

issue #629

* test(volatile): check volatile volumes are removed

* fix(downloads): retry if download failed

* fix(volatile): clean requests on machine remove

issue #629

* test(volatile): old machines crashed on remove

* fix(volatile): old volatile machines crashed on remove

If the machines were created before this feature, they were
missing the extra information, create it on open

issue #629

* fix(volatile): fixed SQL remove old requests

issue #629

* fix(frontend): open front domain

issue #629

* fix(volatile): show current name instead internal

issue #629

* 466 auto sync clock (#722)

* [#466]Added XML modifier method

* [466]Enable qemu agent on new KVM machines

* [466]Added set_time method on resume kvm machine

* [466]Added set_time method on resume kvm machine

* [466]fixed bug creating xml for new machines

* [466]fixed bug creating xml for new machines

* [466]Only executed when resume kvm

* [466]change the function call from post_resume to post_start

* [466]update

* [466]clean debug

* Tests passed!

* feat(grants) shutdown clones

* test(grants): list virtual machines

issue #710

* feat(grants): allow remove all machines

issue #710

* fix(backend): cope with failure to resume

When stopping it tries to resume just in case. It crashes
if it is not paused

issue #739

* wip(grants): generic grants per machine

issue #749

* test(grants): shutdown clones

* feat(grants): shutdown clones

* fix(grants): ignore duplicated grant on startup

issue #739

* fix(backend): set default shutdown to 2 min

issue #739

* fix(shutdown): cleanup not necessary shutdowns

issue #739

* test(shutdown): process all requests

issue #739

* test(limits): test shuts down extra domain

issue #739

* wip(limits): only 1 running domain available

issue #739

* wip(grants): shutdown is now a long process

call to run all process

issue #739

* wip(grants): Rebased from shutdown clones and Master

* feat(grants): allow hibernate if can shutdown

issue #710