Tweak footer styling
Tweak footer styling

This commit intends to fix issue #715.

1. Removes the padding around the lines of links and adds some padding
above them.
2. Removes the padding around the content div, except on the bottom.
This is replaced by padding on the entire moz-links section of the
footer, which creates the padding around the bottom box and keeps
everything nice and neat.

kenrick95/voice-web,gozer/voice-web,gozer/voice-web,common-voice/common-voice,kenrick95/voice-web,gozer/voice-web,kenrick95/voice-web,kenrick95/voice-web,kenrick95/voice-web,gozer/voice-web,common-voice/common-voice,gozer/voice-web,common-voice/common-voice,gozer/voice-web,kenrick95/voice-web,gozer/voice-web,common-voice/common-voice