Added function to makeconf module to remove a var

Allows for completely removing a variable from the make.conf file
Added absent state to makeconf state
Bugfix import of yaml. Add CLI example to docstring. Return the value.
Merge pull request #3230 from torhve/develop

Bugfix import of yaml. Add CLI example to docstring. Return the value.
Merge pull request #3228 from shadowfax-chc/makeconf-del

Makeconf del
Undoing unintentional change with callable
Adapt to the new local client events changes. Fixes #3214.
typo..
Merge pull request #3236 from MTecknology/develop

Undoing unintentional change with callable
Fix saltstack/salt-bootstrap#10
Fix issue when extensions are not installed with jinja2
Merge pull request #3237 from s0undt3ch/issues/3214

Adapt to the new local client events changes. Fixes #3214.
Fix docstrings for the outputters
Change the default outputter in salt-call to be nested
Learning python.. .get() doesn't work on a list.
Merge pull request #3239 from torhve/develop

A doc fix and change default outputter in salt-call
typo
Merge pull request #3240 from MTecknology/develop

Learning python.. .get() doesn't work on a list.