Merge pull request #1255 from jmaas/master

Fix several regressions
Order imports alphabetically
Move Apache configuration files to a separate directory
Move rotate configuration file to a separate directory
Move rsync configuration files to a separate directory
Move Bash completion script to a separate directory
Move Cobbler configuration files to a separate directory
Move Cobbler's Linux service management configuration files to a separate directory
Move Cheetah global methods file to a separate directory
Merge pull request #1257 from alanoe/alanoe/reorder_imports

Order imports alphabetically
Merge pull request #1258 from alanoe/alanoe/restructure_config_dir

alanoe/restructure config dir
Docs. Minor update to EPEL url in developer-guide.
Regression: fix to 'make install' (distro_signatures.json).
Docs. Developer-guide add missing dependencies.