Fix create share

Modify api call for correct paramters to create share api
Help message formatting for disks

Add username to prompt
Add ansi color variables
Format help message for disks to use colors
Format disks info output
Update help messages
Pools console
Pools console

Update help for pool operations
Fix output string parsing in fs/btrfs scrub command to handle 'MiB'
Pool, share and nfs console changes
NFS list and add exports
Removed print statement
share add help message formatting
Merge branch 'issue#442_cli_share' of git://github.com/sujeetsr/rockstor-core into sujeetsr-issue#442_cli_share
Generalize printing help.
refactor nfs add edit views code

modify EditNFSExportView to handle both add and edit nfs export functionality
update disks console with new help calls
update help in pools console
update help in share related consoles.
Fix the list <share> invalid end point bug.
Merge pull request #443 from sujeetsr/issue#442_cli_share

Fix create share
 refactor nfs add edit views code

modify EditNFSExportView to handle both add and edit nfs export functionality
refactor nfs add edit views code

modify EditNFSExportView to handle both add and edit nfs export functionality