Merge pull request #2013 from Shelob9/2.x

Add pods_image_default filter
Added in the Frontier template editor additions
My first try at Inline documentation for Pods

Actions and Filters
Merge pull request #2033 from NikV/2.x

Inline docs for pods_block_field_types filter in PodsForm courtesy of NikV #2035
clear out extra line spaces created by last PR
fixes #2027
adds image tag autocomplete to template editor
Pods 2.3.19 Beta 1
Remove PodsObject from 2.x
Quick tweak
Fixes #2044
Fixes #2036
Add max length DB schema tweak from #2036 to Code field
Fixes #2010, adds Jetpack support for Publicize and Markdown
Markdown support built into Paragraph / WYSIWYG field types, if Markdown is included outside of our component
A few pods_v replacements
Start of saving handling for #2040
Implements PR from @Lindsayanng via #2040
Implement PODS_DISABLE_SHORTCODE_SQL constant to disable parameters passed into SQL from shortcode, for additional control in #2043
Fixes #1975 and adds new filter to __return_false to ignore internal content types in relationship values - pods_pick_ignore_internal