Fix some pages wonkiness and respect the older options allowed with Page Types (renaming shit).
Merge pull request #3344 from huglester/2.3/develop

fixed dashboard notice
Check for a slug first
Merge branch '2.3/develop' of github.com:pyrocms/pyrocms into 2.3/develop
Better solution for throwback configs
Couple fixes in pages
Fix files rename bug
This is how we look keywords up now
Add a magic method for returning segments
Correct a page chunk bug
Correct a page chunk bug
Merge branch '2.3/develop' of github.com:pyrocms/pyrocms into 2.3/develop

Conflicts:
	system/cms/modules/streams_core/field_types/chunks/src/Pyro/FieldType/Chunks.php
Pages uri builder
Parse markdown
Create as text column
Must try / catch proper exceptions when saving users with Sentry
Fix duplicate page function
Merge branch '2.3/develop' of github.com:pyrocms/pyrocms into 2.3/develop
Couple small fixes
Wtf