[UI] Remove blob popup and new blob commit message fall out of the screen at 800px width or less.
Created by: cirosantilli
Note how the right part of the textarea and the cancel button fall out of the screen:
New blob:
What could be done: use max-width instead of width.
Things are working correctly for the edit file view commit message, which gets reduced if screen is smaller.
We should also watch out for https://github.com/gitlabhq/gitlabhq/issues/7485 when implementing this.