Consolidate date formats and column names
We had some unix timestamps and some datetime fields, some called created_at and some called created_on. Now its all datetime, created_at (non-null) and updated_at (nullable).
Ran PSR-2 CS Fixer.
Slug field type was unable to find related fields
Fixed for PSR-2 CS "fixes"
These are site ref generated models. Should not be committed. They get regenerated when streams are updated.
Fix duplicating pages
Bumped 2.3 requirements to 5.3.9.
Merge branch '2.3/develop' of https://github.com/pyrocms/pyrocms into 2.3/develop
PHP CS Fixes for PSR-2 in installer.
New events for deleting / deleted modeled after Laravel conventions
Merge branch '2.3/develop' of github.com:pyrocms/pyrocms into 2.3/develop
Merge branch 'refs/heads/2.3/develop' into 3.0/develop

Conflicts:
	system/cms/modules/addons/details.php
	system/cms/modules/addons/views/admin/field_types/index.php
	system/cms/modules/addons/views/admin/modules/index.php
	system/cms/modules/addons/views/admin/modules/upload.php
	system/cms/modules/addons/views/admin/plugins/_table.php
	system/cms/modules/addons/views/admin/plugins/index.php
	system/cms/modules/addons/views/admin/themes/index.php
	system/cms/modules/addons/views/admin/widgets/index.php
	system/cms/modules/blog/controllers/admin_fields.php
	system/cms/modules/blog/details.php
	system/cms/modules/blog/views/admin/categories/form.php
	system/cms/modules/blog/views/admin/categories/index.php
	system/cms/modules/blog/views/admin/form.php
	system/cms/modules/blog/views/admin/index.php
	system/cms/modules/blog/views/admin/partials/filters.php
	system/cms/modules/blog/views/admin/tables/posts.php
	system/cms/modules/comments/controllers/admin.php
	system/cms/modules/comments/views/admin/index.php
	system/cms/modules/comments/views/admin/partials/filters.php
	system/cms/modules/comments/views/admin/tables/comments.php
	system/cms/modules/files/controllers/admin.php
	system/cms/modules/groups/language/persian/group_lang.php
	system/cms/modules/groups/language/persian/help_lang.php
	system/cms/modules/maintenance/views/admin/items.php
	system/cms/modules/navigation/controllers/admin.php
	system/cms/modules/navigation/details.php
	system/cms/modules/navigation/views/admin/index.php
	system/cms/modules/pages/controllers/admin.php
	system/cms/modules/pages/controllers/admin_types.php
	system/cms/modules/pages/src/Pyro/Module/Pages/Model/Page.php
	system/cms/modules/pages/views/admin/ajax/page_details.php
	system/cms/modules/pages/views/admin/index.php
	system/cms/modules/pages/views/admin/pages/partials/form_css.php
	system/cms/modules/pages/views/admin/pages/partials/form_details.php
	system/cms/modules/pages/views/admin/pages/partials/form_javascript.php
	system/cms/modules/pages/views/admin/pages/partials/form_meta.php
	system/cms/modules/pages/views/admin/pages/partials/form_options.php
	system/cms/modules/pages/views/admin/types/form.php
	system/cms/modules/pages/views/admin/types/index.php
	system/cms/modules/permissions/language/persian/help_lang.php
	system/cms/modules/permissions/language/persian/permissions_lang.php
	system/cms/modules/redirects/details.php
	system/cms/modules/redirects/views/admin/index.php
	system/cms/modules/search/controllers/admin.php
	system/cms/modules/search/src/Pyro/Module/Search/Model/Search.php
	system/cms/modules/streams_core/controllers/ajax.php
	system/cms/modules/streams_core/controllers/public_ajax.php
	system/cms/modules/streams_core/field_types/datetime/src/Pyro/FieldType/Datetime.php
	system/cms/modules/streams_core/field_types/email/src/Pyro/FieldType/Email.php
	system/cms/modules/streams_core/field_types/file/src/Pyro/FieldType/File.php
	system/cms/modules/streams_core/field_types/image/src/Pyro/FieldType/Image.php
	system/cms/modules/streams_core/field_types/integer/src/Pyro/FieldType/Integer.php
	system/cms/modules/streams_core/field_types/keywords/src/Pyro/FieldType/Keywords.php
	system/cms/modules/streams_core/field_types/relationship/language/french/relationship_lang.php
	system/cms/modules/streams_core/field_types/relationship/language/hebrew/relationship_lang.php
	system/cms/modules/streams_core/field_types/relationship/language/indonesian/relationship_lang.php
	system/cms/modules/streams_core/field_types/relationship/views/autocomplete_js.php
	system/cms/modules/streams_core/field_types/relationship/views/form_input.php
	system/cms/modules/streams_core/field_types/relationship/views/fragments/relationship.js.php
	system/cms/modules/streams_core/field_types/slug/src/Pyro/FieldType/Slug.php
	system/cms/modules/streams_core/field_types/user/language/french/user_lang.php
	system/cms/modules/streams_core/field_types/user/language/indonesian/user_lang.php
	system/cms/modules/streams_core/field_types/user/language/persian/user_lang.php
	system/cms/modules/streams_core/field_types/user/language/russian/user_lang.php
	system/cms/modules/streams_core/field_types/user/views/fragments/user.js.php
	system/cms/modules/streams_core/field_types/wysiwyg/views/wysiwyg_admin.php
	system/cms/modules/streams_core/views/entries/filters.php
	system/cms/modules/streams_core/views/entries/form.php
	system/cms/modules/streams_core/views/entries/tabbed_form.php
	system/cms/modules/streams_core/views/entries/table.php
	system/cms/modules/streams_core/views/fields/form.php
	system/cms/modules/streams_core/views/fields/form_input_row.php
	system/cms/modules/streams_core/views/fields/form_single_display.php
	system/cms/modules/streams_core/views/fields/parameter.php
	system/cms/modules/streams_core/views/fields/table_assignments.php
	system/cms/modules/streams_core/views/fields/table_namespace.php
	system/cms/modules/templates/details.php
	system/cms/modules/templates/views/admin/preview.php
	system/cms/modules/users/src/Pyro/Module/Users/Model/User.php
	system/cms/modules/users/views/admin/groups/form.php
	system/cms/modules/users/views/admin/users/form.php
	system/cms/modules/users/views/admin/users/index.php
	system/cms/modules/variables/details.php
	system/cms/modules/wysiwyg/views/files/index.php
	system/cms/modules/wysiwyg/views/image/index.php
	system/cms/themes/pyrocms/views/admin/dashboard.php