Removed trailing white spaces

Removed trailing whitespaces with

```sh
for file in `grep -r " $" * | cut -d : -f 1 | sort | uniq | grep -v " "`; do sed -i 's/[ \t]*$//' $file; done
```

and some handwork.

public/fonts/fontawesome-webfont.svg

@@ -501,4 +501,4 @@
 <glyph horiz-adv-x="1792" />
 <glyph horiz-adv-x="1792" />
 </font>
-</defs></svg> 
+</defs></svg>