Make unstyled md-icon less terrible
Make unstyled md-icon less terrible

<md-icon>foo</md-icon> displays terribly messy when not styled.
This commit makes it less terrible by preventing the text
from wrapping and hiding overflowing text.

Tatoeba/tatoeba2,Tatoeba/tatoeba2,Tatoeba/tatoeba2,Tatoeba/tatoeba2,Tatoeba/tatoeba2