The first paste input field doesn't have the Remove This File button is there are a multiple paste inputs

[nekhvoya]

Steps to reproduce:

1. Open the Pinnwand
2. Click the Add Another File button a few times
3. Try to delete the first paste input

Actual result: the first paste input can't be deleted as the Remove This File button is absent

Expected result: the Remove This File button should be displayed for all the inputs if there are multiple paste inputs displayed on the page (to be able to delete the first paste and only paste the 2d and 3d ones if needed)

[supakeen]

This might also be the time to think about adding confirmation if a file is removed that already has content in its textarea.

[supakeen]

Also if you're in this area then:

There's a difference in alignment between the 'remove this file' and 'add another file' if you could pick that up too that'd be cool.

[supakeen]

Done in #208.