Fixing styles on urlencode and urldecode

Fixes: https://github.com/duckduckgo/zeroclickinfo-goodies/pull/622#issuecomment-58964545

![image](https://cloud.githubusercontent.com/assets/978048/4628582/0e3762b2-5399-11e4-99f2-e516294e2a8b.png)

![image](https://cloud.githubusercontent.com/assets/978048/4628585/165711c2-5399-11e4-86bf-7178b7e0f4a2.png)