Merge pull request #1 from vinilios/master

Avoid establishment instance updates
start work on PDF, add address to establishment
Merge branch 'master' of https://github.com/grnet/hch-roll
use Times-Roman, seems better for Greek
address instead of location
use address instead of location (contd.)
address instead of location
Merge branch 'master' of https://github.com/grnet/hch-roll
more work on pdf notices
working pdf generation
more pdf generation and a minor fix
fix input file
Include local_settings module as an example file

to avoid irritating unstaged changes messages on local settings modifications
Keep compatibility with django 1.4

no ``ending`` argument support
Include local_settings module in gitignore