CC-5781: Upgrade script for new storage quota implementation

Created skeleton for upgrade script
Included upgrade folder path for 2.5.3 so Airtime can upgrade from older versions
Changed airtime version in necessary places
CC-5781: Upgrade script for new storage quota implementation
CC-5781: Upgrade script for new storage quota implementation

Include propel library
CC-5781: Upgrade script for new storage quota implementation

add propel to include path
CC-5781: Upgrade script for new storage quota implementation
CC-5781: Upgrade script for new storage quota implementation
CC-5781: Upgrade script for new storage quota implementation
CC-5781: Upgrade script for new storage quota implementation
CC-5781: Upgrade script for new storage quota implementation
CC-5781: Upgrade script for new storage quota implementation
CC-5781: Upgrade script for new storage quota implementation
CC-5781: Upgrade script for new storage quota implementation
CC-5709: Airtime Analyzer

* Fixed daemonization stuff for upstart
* Adding missing unit test files
Merge branch 'cc-5709-airtime-analyzer' of github.com:sourcefabric/Airtime into cc-5709-airtime-analyzer
CC-5781: Upgrade script for new storage quota implementation

Upgrade script for local installs
SAAS requires a different script
Merge branch 'cc-5709-airtime-analyzer' of github.com:sourcefabric/Airtime into cc-5709-airtime-analyzer
Merge branch 'cc-5709-airtime-analyzer' into cc-5709-airtime-analyzer-saas
CC-5781: Upgrade script for new storage quota implementation

Upgrade script for saas only