Add 2 filters on get_media_item(s) functions

[momo360modena]

Allow plugin to add some content on media functions.

[momo360modena]

This modification is really minor.

I see not why she could not be integrated into the version 3.0

[nacin]

They work for you, but there are larger implications. Are they consistent? Are the arguments passed to them in a good order, and are those consistent, and are there others that should be added, or ones in there now omitted? Would filtering another part of the function, instead of its raw output, be a better use of cpu cycles? Are there other functions that should get similar filters for consistency?

We're also planning to rework media/upload significantly in 3.1. Don't think we should add a filter now when those functions may very well change significantly in a month. That all said, we're not going to add little enhancements at this stage, as we're not only far past feature freeze but we've now entered beta.

[songsthatsaved]

This corresponds to the old media experience. Closing.