New feature: Multicoloured space usage bar on web dashboard.
Minor visual fixes on web dashboard; paddings and min-width for bar.
Mark a place which needs work.
Merge branch 'dashboard_enhancements' of https://github.com/eloukkola/zfswatcher into eloukkola-dashboard_enhancements
Add SEVERITY_NONE pseudo severity level.
Improve comments.
Disallow negative percentage.
Rearrange.
Provide methods for calculating the usage.
Handle re-installation of www files correctly.
Round percentages correctly.
Use a severity "none" to set CSS class when a usage level is not reached.
Use the usage percentage calculation method call in the web interface.
Turn the function that gets the severity from usage percentage into a getter.
Merge branch 'eloukkola-dashboard_enhancements'