Merge pull request #100 from lots0logs/testing

Better handling of exceptions during grub install.
Trying to improve error messages when a CalledProcessError exception is thrown
Merge branch 'testing' of https://github.com/Antergos/Cnchi into testing

Conflicts:
	src/installation/process.py
More info shown when issuing an processerror exception
Revert: Cnchi will retry once if exception occurs with grub-install or grub-mkconfig
Ported some (not all) lots0logs UEFI changes.
Added a warning message when the bootloader is not being correctly installed
Fixed some typos. Also changed global command line vars to a global dict
Changing how args are parsed.
Merge branch 'testing' of https://github.com/Antergos/Cnchi into testing

Conflicts:
	src/installation/auto_partition.py
	src/installation/process.py

merged changes from main testing branch