add Makefile to install plugins
added dnfplugins lib with common plugin code
add po dir and Makefile to handle translation extraction and install
Add Makefile for install & common helper tasks
Cleanup spec and add translation support
builddep: use common lib and added translation wrappers
copr: use common lib
use Command.usage & summary
cleanup imports & PEP8 fixes
debuginfo-install: use common lib
Add Command.usage & summary
PEP8 Fixes
download: use common lib
generate_completion_cache:  use common lib
ghost: use common lib
PEP8 fixes
kickstart: Use common lib
use common logger
PEP8 fixes
noroot: Use common lib
Add translation wrappers
added .pot file