Releases for Aegir Hosting Logs

Fixes loading of log settings data.

See the full release notes at: http://docs.aegirproject.org/en/3.x/release-notes/3.17/

See the full release notes at: http://docs.aegirproject.org/en/3.x/release-notes/3.15/

See the full release notes at: http://docs.aegirproject.org/en/3.x/release-notes/3.13/

1. Fixed major bug: site configuration was saving but being overwritten on site verify, and context properties were not saving in the backend.
2. Added feature: Added Hosting Logs Path to hosting configuration form, allowing editing in the front-end.

• Added "Write logs to screen" option, allowing fatal errors to output directly to the web browser. Useful for development sites.
• Put all logs settings into a fieldset.
• Simplified the node tab.
• Simplified the way the data is loaded into nodes.