Add row for LinkEHR to tools download page;

Add new Karolinska masters thesis.
Improve downloads page with Github links
News database system implemented
Merge branch 'master' of https://github.com/openEHR/openehr-website

Conflicts:
	home.php
changing header and footer structure, scripts reorganisation, files and folders reorganszation (except content folder), preparation for localisation
Styles and formatting changes
Add Template Designer download link (for now, hosted directly on website)
test branch commit
Replacement of the Entry points section with Getting involved, changes of the content of About Us section according to the Board decision, new diagrams added