[build] [git] streamline build paths, remove phpmd for now, update gitinore
[build] streamline commandline tools target
[build] cleanup tool config in root dir
[build] ant clean deletes cache file generated in root dir
[build] fix wrong repo name in build tools configs
[test] Content\Text 100% coverage
[test] Request 100% coverage
[test] AbstractHeader 100% test coverage (left some placholders related to quoted text validation in RFC)
[build] run phphunit with --stderr switch
[build] add "docs" target; remove vendor/ diretory on "clean" target
Merge branch 'develop'