Display the command to mount the share when it is exported through NFS

Add appliances to dependencies in share details so that current
appliance ip can be obtained
Modify nfs_exports_table to display the mount command if any nfs exports
are present
style changes for code section
Merge pull request #86 from sujeetsr/issue#75_nfs_export_command

Display the command to mount the share when it is exported through NFS
Reorder and resize default widgets

Modify cpu widget - position 1, 1 row, 2 columns
Modify sysinfo widget - position 2, 1 row, 1 column
Modify smart_probe - position 3, 2 rows, 2 columns
Merge pull request #92 from sujeetsr/issue#91_reorder_widgets

Reorder and resize default widgets