213 - all but new manual section

audit the code for any println or use of other loggers
Add some starter logging config to the lazybones templates
213 - CodeNarc fixes
213 - logging chapter
213 - add name to contributors list and docs tweak
add test for response.sendFile
use context instead of ExecControl
removing unused import
formatting.
Merge branch 'master' of https://github.com/chipmccormick/ratpack

Conflicts:
	ratpack-manual/src/content/chapters/99-about-the-project.md
Merge pull request #361 from ratpack/responseSendFilesSpec

add test for response.sendFile
Merge remote-tracking branch 'upstream/master'