Updated .HTACCESS

Added HTML5 Boilerplate
Re-added Default TwentyFourteen Theme

This is needed before activating MedTwentyFourteenTheme
Registered Subpage Navigation

on Line 12 (/lib/init.php) and Line 95 (/lib/nav.php)
Added Subpage-top in line 14, Deleted header-top-navbar
Added Subpage-top-menu, contains subpage nav code
Added Subpage-top.php

Contains Subpage picture, potatocurve.png and Subpage-top-menu