pipeline UI changes

[gbook]

• add disk usage to main pipeline display
• prevent pipeline jobs from submitting if disk free space is less than 1%
• ability to hide/archive pipelines
• pipeline squirrel export

[gbook]

Added disk usage and percent free space to pipeline display

[gbook]

Adding prevent pipeline from submitting is disk free space < 1%

[gbook]

can now view hidden pipelines