log function should only emit once if _server object
add joi validation of pack options
Require if-modified-since to be a second more than last-modified. Closes #1788
Undo #1788
if-range. Closes #1754
Fix composer deps order. Closes #1769
Follow coding conventions concerning semicolons; Don't initialize variables explicity as "undefined"

This commit doesn't break anything. I added a bunch of semicolons in order to be more consistent regarding the style guide. Basically, JSHint passes now (except for one function being initialized inside a for-loop).
fix #1760
fix  Content-Type overriding issue  #1760
Merge pull request #1745 from cjihrig/1721

Add joi validation of pack options
prepend jsonp callbacks with a comment to prevent the rosetta-flash vulnerability
remove trailing whitespace
add standard for dealing with callbacks
Test for #1750
Merge pull request #1752 from wpreul/master

Adding helpful error message when pack.register is missing a callback
Fix unused file marshall. Closes #1407
Merge branch 'master' of github.com:spumko/hapi
Open single file stream. Closes #1771
Fix coverage for #1407
Retail etag on head. Closes #1772