Remove the Sugar libary from the kernel.

Sugar is good for the application environment where it's carefully
controlled. But we should be more conservative at the system level since
there are many more third-party libraries interacting. Underscore or
Lo-Dash are better choices when we get to it.

Undoes the fix in commit 8dd8492 since it used a Sugar function.

Closes #1520. References #1622.
Add the development version of the Sugar library.

Keep both in the repository so that we can ultimately choose minified or
not based on the execution environment.

This and the minfied version are custom builds from
http://sugarjs.com/customize with the Core, ES5, Array and Object
options selected.

References #1520.