Fixed Bug 1014765 & Bug 1019640

Fixed Bug `1019640`: In the Webmaker.org footer, in the line of text "with support from our wonderful partners and Mozillians like you!" –– the word[Mozillians] should link to `https://mozillians.org/en-US/`

Also fixed an additional mistake in the `webmaker.org.json` file and `layout.html file`, regarding the spelling of "Mozillians".

Also Fixed Bug `1014765` and updated the font-awesome to `4.1.0` from `4.0.3`.

There weren't any before, should I add it on `Line 124` ?