General code clean up

Removed extraneous dummy categories from the $categories array in functions.php
Removed the reference to a parent category for Camp Diairies category in function.php
Fixed problem with menu.js by looking up the jQuery noConflict wrapper info on the WordPress Codex. The first line has been updated and should now work correctly.
Created new main.css and wordpress.css stylesheets in assets/css/src to tie into the FSESU_Theme object better. At the moment, these are only skeletons, but they should allow the theme to be testing at this stage
Changed enqueued stylesheets in FSESU_Theme to their minified counterparts
Updated header.php to tidy up the head tag, removed unnecessary link and meta tags
Changes main div to a section with id container in header.php, and updated close tag in footer.php
Changes section div tags into section tags in index.php, page.php, front-page.php, content.php, content-video.php
Added a new section (entries) to the page structure and moved the sidebar into the content section
Moved template parts into includes/views subfolder
Changes sidebar div tag to aside

Fixes #10
Add new files forgotten in last commit