Synnefo

add capacity to service resource reserves

This is not normally needed, since all resources circulating through
the system must be allocated from the initial reserve quantities.
However, if somehow this consistency is broken, and more quantities
are released to the reserves than have been allocated from them,...

Display resource quota in user-show command

Advances in syncing quotaholder with astakos

Factor out trigger_sync() as lock_sync() to be used for other
sync processes in addition to sync_projects().
Implement sync_users(), which registers users and their quotas.
Use both sync processes in astakos-qh-sync management command.

Changes in registering to quotaholder

Add an 'uplimit' (default) field in Resource;
change AstakosUserQuota fields to IntDecimalField;
pass all four limits of initial quotas to the quotaholder;
register services and resources explicitly upon creation;
a wrapper for get_quota.

Provide commands for importing/exporting existing user resource policies