Remove horizontal padding on main menu

Eliminates horizontal scrollbar due to the 100% width + 10px (left and right) padding.
Make widgets responsive on smaller resolutions
Fixed widget withs

Moved the `.widget-area aside` styles from <600px width to <500px width to allow for proper cascading.
Merge pull request #28 from eternalwaves/patch-2

Width and padding layout fixes; Awesome, thank you!