Fixing duplicate search logs.
Fixes 447 - Hide mobile nav with css rather than js.

Also, removing random unused class.
Removing accidentally added css rule
add placeholder templates before and after each post item
Merge pull request #573 from anthonymayer/hide-mobile-nav-dropdowns

Hide mobile nav dropdowns
Merge pull request #571 from anthonymayer/fix-duplicate-search-logs

Fixes #543 - duplicate search logs.
Fixes #572 - Expands search box when focused or not empty.

Also, changed when empty class is removed to avoid text box shrinking and then expanding after it loses focus but has content.
Merge pull request #580 from anthonymayer/expanding-search-box

Fixes #572 - Expands search box when focused or not empty.