Plain-text: first strip's HTML is not in a containing strip

[eb1]

This is a weird one that was found during testing:

When adapting a plain-text file (or text snippet from the clipboard), the first strip seems to be missing in the html. This is probably a rendering logic bug somewhere, but it's causing the navigation to be thrown off when the user goes past the last pile in the first phrase -- AIM continues along and does an automatic translation of the ENTIRE second strip.

Steps to reproduce the behavior:

1. Launch AIM and import a text document (or a text snippet from the clipboard)
2. Start adapting the text document.

--> Note that when the last word in the first paragraph is finished, AIM will proceed to automatically translate the entire second strip, even if there isn't anything in the KB. Instead, the cursor should stop at the first word that doesn't appear in the KB.

Seen in the browser, as well as on Android devices.