[DOM] Massaged "header" DOM and corrected

Massaged "header" DOM indenting and layout.

Corrected IMG tags

Removed unneeded spacing around LI contents
[MEDIAQUERY] Added styles from sheet.css
[CSS] Massively cleaned .nav-row styling

Fixed typos - I shot the seriff

Removed redundant styles. Halved selectors.

Moved media query to queries.css
[CSS] Made as few changes as I could

Fixed issue where NAV in Mobiles was limited to 250 pixels width.

Simplified Media Query

Removed a redundant font-family rule

Somehow resisted the nearly crippling desire to move all the HEAD based
styling to the linked sheets
[UNCOMMENTED] Hid the #speaker block with CSS