Fixed handling of active configurations that points to deleted branches. Configurations and builds can now be checked and displayed even though the repository path cannot be found for last revision. It uses configuration 'last' (`max_rev`) to "close" the configuration. Closes #606. Thanks to falkb for extensive testing.

[egg_info]
tag_build = dev
tag_svn_revision = true

[unittest]
xml_output = build/test-results.xml
coverage_summary = build/test-coverage.txt
coverage_dir = build/coverage