Improved git installed detection.
    -- added LGDefaults @property gitPath.
    -- now it sets GIT_PATH key in com.github.autopkg
LGInstaller class and relevant modifications to other classes
    -- added flexibility to  LGGitHubJSONLoader getLatestRelease  by allowing for specifying a URL
    -- added install test to AutoPkgrTests for both git and autopkg
Implement LGInstaller Class into controller
merge branch 1.0.4-rc
optimize installer code, clean up strings
Merge branch '1.0.4-rc' into LGInstaller-class

Conflicts:
	AutoPkgr/LGConfigurationWindowController.m
Adjust order of git  precedence
Changed "e-mail" to "email."
Adjustments to logs and progress messages.
Changed key equivalent for Verbose Logs menu to option and removed the downloadAndInstallAutoPkg declaration from LGConfigurationWindowController.h.
working proof of concept ML git installer
BOOL RC is now BOOL success for clarity
clean up some typos / convert some DLog to NSLog
Only open folders in Finder if they exist. Also minor cleanup.
Improved how the 'Open in Finder' buttons are enabled/disabled.
Removed unused image from repo.
fix issue #136
Merge pull request #138 from lindegroup/issue-136

fix issue #135 and #136
Make sure task exists and is running before terminating
code-sign-setup