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* ADD:
- add tags to each task
- added clean deploy task for site removals; will only run if task tag is used
- added tower2.thezengarden.net to site list for testing awx installs/upgrades
* MODIFY:
- modified awx site reference to be tower
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* ADD:
- added special section just for seafile to proxy_site.j2; this is both unfortunate and unavoidable
* MODIFY:
- images.thezengarden.net was having issues chaining ssl's; its now a port 80 site with ssl handled only via nginx
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* ADD:
- added client_max_body_size in proxy_site.j2 template so sites may permit uploads of larger files
* MODIFY:
- modified several sites to make use of client_max_body_size option