Remove bottom line and the copyright

See #119
Move instructions box below the submit box

See #119
Remove the "Learn by Writing Together" tag line.

See #119
Increase font size and spacing for story

18px and line height of 2.5

See #119
Make student story box bigger.

See #119
Merge branch 'feature/design-pass-119' into develop
0.1.17
Merge pull request #124 from wlaurance/master

Design Pass 119