NEW: Ability to perform offline bootstraping

Previously, bootstrap.sh was always trying to fetch cappuccino-base from github. This patch provides a new option "--copy-local [PATH]" that will let the user give a path of a local copy of the cappuccino-base zip. This can be pretty useful in an automated build system that cannot always access the internet.
FIXED: dependency to tusk

Previously, jake install was calling tusk to ensure installed packages are up to date, and was used to install the new build. As tusk and all that narwhal suite is deprecated and causes more and more problems, this patch:

 - removes the up-to-date check: it's very likely that no package will never be updated anymore
 - uses a local function to install the freshly build
Merge branch 'master' of https://github.com/cappuccino/cappuccino