VMT version

Virtual Machine Template verion introduced. It will allow us to track
number of saves user performed.

Verion will be incremented only when it is not explicity set during creating
new VMT.
save action
remove older VMT action
remove old VMT action triggered after VMT state changed to ACTIVE
set VMT version when it is copied from another CS
appliance type PUT triggers save action

Save action is triggered when `appliance_id` parameter is passed into
PUT appliance type request.
Version presented on VMT admin view
actions moved into app/actions dir
better name for finding VMT with source id at site
don't mind the extra locales ;)
add and remove operations for fund associations with users and compute sites
removing the extra locales commited by mistake to this branch
minor fixes
minor fixes
rspec for testing two new Fund model methods
nicer user and compute site display for a fund
fixing small things in locales spotted by Piotr
Merge pull request #41 from dice-cyfronet/preventing_fund_to_compute_site_duplications

preventing_fund_to_compute_site_duplications
Merge pull request #42 from dice-cyfronet/user_and_compute_site_management_for_funds

add and remove operations for fund associations with users and compute sites
Merge pull request #16 from dice-cyfronet/save

Save operation