fixes crash in mysql when token is unknown

fixes #85
make image_uri optional
image_uri empty
hook up hapis internal logging to intel
make hapi logs verbose
for prod/stage get a git sha from config/version.json which the rpm build will provide
Merge pull request #92 from jrgm/config-version-json

for prod/stage get a git sha from config/version.json which the rpm build will provide
use a hapi logger to log internal hapi events
add a way to destroy tokens

fixes #83
add tests that token is destroyed

adds the `buf` module, which helps converting between buffers and hex strings.
there were errors before, so this helped fix the tests.
Merge pull request #91 from mozilla/destroy

add a way to destroy tokens
don't use multipleStatements in mysql

fixes #100
Merge pull request #101 from mozilla/multiple-statements

don't use multipleStatements in mysql
add a /config route

fixes #102
upgrading dependencies
implement db.removeClient
add jrgm@mozilla.com to travis email notification
- be (redundantly) explicit about utf8 on tables, and set charset utf8 on the connection
- add method db.getEncodingInfo() and a script to show the values
Merge pull request #106 from jrgm/db_encoding

be (redundantly) explicit about utf8 on tables, and set charset utf8 on the connection

fixes #62
this modules is not referred to anywhere I can see