On Sync init only send siteSettings without objectId
On Sync init only send siteSettings without objectId

Auditors: @diracdeltas

Test Plan:
1. Have Sync disabled.
2. Browse a site and toggle a Bravery Panel setting.
3. Enable Sync and restart your pyramid. Note that siteSettings are sent.
4. Restart your pyramid again. Note this time siteSettings are *not* sent.

timborden/browser-laptop,luixxiul/browser-laptop,diasdavid/browser-laptop,diasdavid/browser-laptop,luixxiul/browser-laptop,diasdavid/browser-laptop,timborden/browser-laptop,timborden/browser-laptop,timborden/browser-laptop,luixxiul/browser-laptop,diasdavid/browser-laptop,luixxiul/browser-laptop