Fix Hakiri issues
Refactoring Tickets

- Tickets now independent from registration
- Implemented money gem
#419
Merge pull request #482 from ChrisBr/refactor_tickets

Refactor tickets
Extracted Splashpage from Conference

#418
Merge pull request #483 from ChrisBr/refactoring_splash

Extracted Splashpage from Conference
Fix failing migration for new price and currency columns of ticket
Merge pull request #489 from ChrisBr/fix_migration

Fix failing migration for new price and currency columns of ticket
Fix accept, reject and confirm mail templates
Merge pull request #485 from ChrisBr/fix_hakiri_issues

Fix Hakiri issues
Merge pull request #490 from hennevogel/master

Fix accept, reject and confirm mail templates
More accept/reject/confirm fixes
Merge pull request #491 from hennevogel/master

More accept/reject/confirm fixes
Fix a double render while confirming proposals
Merge pull request #492 from hennevogel/master

Fix a double render while confirming proposals
remove trailing spaces and blank lines
apply StringLiterals cop (remove double quotes, unless there is string interpolation)
exclude config/ from rubocop styling, more style fixes
deletions
fix quotes on tickets