Improve the build system

[impl]

The new build system is still missing a few useful features. It also needs a bit of refactoring.

Features to add:

• Integration with VCSes
• Removing and renaming modules, actions, views, templates, models, project templates, and project models (partially implemented; see version at /branches/impl-build_system/build/build.xml@2592)
• Unit testing with the new testing system; see #380
• Customization of modules' filesystem layouts; see #668
• Clean up
  • Use AnsiColorLogger? again
  • Make the system less verbose
• Allow for a fallback templates directory, e.g.

  <agavi.select-template property="action.template">
    <from>/main/src/build/templates</from>
    <from>project/templates</from>
  </agavi.select-template>
  

[impl]

See #689 for history.

[impl]

Superseded by #871, #872, #873, #874, #875, and #876.