Make deleteUrl configurable
Add spinner when adding/removing a meta tag
Merge branch '2.0-meta'

Small Meta improvements. Refs: #493
Refactor theme setup code into a separate meethod
Read helper setup from theme.json
README: Fix php version requirement

Closes #521
Merge branch '2.0-theme-and-helpers'

Refactor theme and helper setup
Enable themes to override CroogoHelper
Fix: Site.timezone will still be empty during install

Closes #513
Event Point In The view Action