Playground VPS clone: copy configs, do not assign playground default ones

This caused problems when cloning VPSes with disk larger than disk
allowed on playground.
Swap: temporarily disable for non-admins

As it is, swap operation is unsafe. User may enqueue multiple swaps,
which can result in undefined scenarious. It will stay disabled
for users until vpsAdmin has the necessary means to ensure
safety of this operation.
Merge branch 'devel'