Calendar view for RT ticket dates and custom fields

Changes for 1.08 - 2023-12-15

• Prevent loss of filter selection when changing months w/select boxes
• Restore the default popup configuration
• Don't die in the popup helper if attributes are not found
• Fix Status Color typo
• Add a default color for unmapped states
• Versions 1.06 and 1.07 were internal releases and thus not published to CPAN.