Cloud-Update

New feature:

• New API users parameter to filter timesheets for multiple users
• Allow to call “timesheet restart” with GET to prevent errors

Improvement:

• Adjusted error messages for missing invoice sum calculator/renderer/number generator
• Compare tags case insensitive to prevent unique key constraint exception
• Divide by zero for project stats with total duration less than 20 seconds
• ModifiedAt is not set if timesheets are cloned via “create copy”
• Invoice templates: Use invoice and entries only, remove model access, support for new classes text-begin and text-end