#2302 see if we can bypass for now
Allow downloads shortcode to show all available downloads

When the `posts_per_page` argument is set to `-1` in a WP_Query object, it will [return all posts](http://codex.wordpress.org/Class_Reference/WP_Query#Pagination_Parameters). However, in the downloads shortcode, this value is not possible, because the `number` variable is being sanitized with `absint()`, forcing a positive integer.

This change is valuable in cases where you don't know how many downloads will be displayed with the other given criteria, but you want to make sure you get all of them.
Merge pull request #2333 from coreymckrill/patch-1

Allow downloads shortcode to show all available downloads
Fix merge conflict
Refresh issue #2209
Merge pull request #2334 from ghost1227/issue/2209

Docfixes
Trim whitespace from filenames on save
Add file empty check
Picky picky...
Merge pull request #2336 from ghost1227/issue/2331

Trim whitespace from filenames on save
Trim name as well.#2331