Merge pull request #157 from Jackbennett/scripts

Getting the build script to a working state
Adjusted the build script behavior

Removed some absolute path, and refactored the code so
it handles the nested folder archives
Removed unused function
Refactored mail download loop, better error handling
Merge branch 'scripts' of https://github.com/bliker/cmder into scripts

Conflicts:
	scripts/build.ps1
In powershell you pretty much never want to use Write-Host, its output can't be redirected along the pipeline. You couldn't pipe this output to a logfile.
Error checking for 7z extraction
Silencing the output from 7z so I can actually see what else the script is
doing.
Adding some clearer dubugging info for cleaning up folders
merging in new additions to the pull request