Just minor text changes.

Removed errors if template doesnt have .scripts.tar.gz files

Fixed ident block error

Added line for ignoring possible error while renaming, some templates doesnt have .scripts.tar.gz file

Added actions and functions that rename template and all it files.

Edit of OpenNode TUI GUI,added buttons and options for renaming templates.

made error handling more robust

Added disk_usage to `onode.host` which only checks local filesystems (to avoid lockups) and correctly handles spaces in mountpoint

added support for openvz action scripts. Closes #87

added cpulimit to openvz edit form, removed vzcpucheck summary from the new vm form

a better pattern matching for the interface name. Closes #85

use a more reliable path for openvz root fs

add customization of OMS VM environment before booting

fixed a typo - power, not multiplication

reverted previous approach of detecting memory usage to support older prevswap configuraitons