Storing type field

Storing admin them flag!
Added restriction for admin theme

Added if condition that restrict admin theme from the display.
Update ThemeManager.php
Minor edit
Set created_by id on save
The birth of field type Eloquent relations
Added a wrapper method for the field type belongsTo relation
Added getUserOptions() method to the User model
user field type improvements
Added ability to enable / disable field type relations
Added ability to eager load field type relations automatically
Use eager loading in user field type
Getting onQuery hook to actually work in Cp\Entries::table()
Merge pull request #2989 from obrignoni/2.3/feature-field-type-relations

2.3/feature field type relations
Blog uses create/edit from streams now

Fixes: https://github.com/pyrocms/pyrocms/issues/2977
Merge branch '2.3/develop' of github.com:pyrocms/pyrocms into 2.3/develop
Callbacks are and always were gross.
Will need to implement these properly and nicely at some point.
Merge branch '2.3/develop' of git://github.com/pyrocms/pyrocms into 2.3/develop
Added missing search.entry_type
Put entry_type in the wrong place.