Update global_lang.php

Some polish translation.
Fix FieldModel
Merge branch '2.3/develop' of github.com:pyrocms/pyrocms into 2.3/develop
Removing is_ (language files)
Remove is_ prefix (field types)
Removing is_ prefix (themes)
Remove is_ prefix (streams_core)
Remove is_ prefix (modules)
Merge branch '2.3/develop' of github.com:pyrocms/pyrocms into 2.3/develop
Removing is_ prefix (streams_core - locked)
Merge branch '2.3/develop' of github.com:pyrocms/pyrocms into 2.3/develop
Update some accessors and mutators
Get the latest Lex on composer
Temporary fix for weird issue where integers are being passed to query modules by slug

Requires further investigation
The User model implements the ArrayableInterface so that it is converted by Lex
EntryPresenter improvements
Update FieldUi to non-static
update uses of FieldUi
The convention should be to always use methods to modify properties
EntryViewOption improvements