added the ability to clear out an image in the image field type
added the ability to remove files from the files field type
dont allow required to be cleared out
fixed file clearing
Add odt to mimes.php
Filling in some info on a comment.
Don't allow relationships to be set up for a page.

Because of the unique structure of pages, we have a separate field type for this:

https://github.com/adamfairholm/PyroStreams-Page-Field-Type

Addresses #2483 and #2427
Allowing the CP field form driver to show the title column checkbox.

This is off by default, but can be set by passing allow_title_column_set = true in the $extra array.

Addresses #2483 and #2427
Allowing setting the title column for page fields.

This allows setting a title column for relating.

Addresses #2483 and #2427
Changing my mind on this.

We should give site builders freedom to relate a page stream (but not a page itself).

This just needs to be made clear in the docs.

Closes #2483 and #2427
Merge pull request #2503 from ChristianGiupponi/2.2/develop

Update some italian strings
Merge pull request #2500 from EmilioBravo/intangible

Added .odt to mimes.php
Merge pull request #2490 from james2doyle/feature/clearimage

added the ability to clear out an image in the image field type
Issue #2474: Hides the comments and keywords form elements from pages and blog forms.
Run email notifications even if not a plugin call.

We might want to send email notifications from the control panel using the CP driver. This is an unnecessary restriction.
Merge pull request #2506 from mikaelkundert/issues/2474

Issue #2474: Hides the comments and keywords
Merge pull request #2504 from james2doyle/feature/removefile

Feature/removefile - allows the files field type to be cleared
added Lithuanian language to slugify.js
added lithuanian part two
Updated Arabic translation