Update examples and function generator

[underbluewaters]

Match latest seasketch-report-client components and project structure.

• [x] Use latest components
• [x] Export tabs as array rather than <ReportTabs />
• [x] Make sure the thing actually compiles
• [x] Replace strings in templates
  • [x] Replace $template in example client with project name
  • [x] Upon creation of first function, replace $functionName in client