Merge pull request #13 from matsuo/fix-spelling

Fix spelling
New updates
Merge branch 'master' of https://github.com/msyk/INTER-Mediator_WebSite

Conflicts:
	en/news.html
	ja/news.html
Info added for study meeting 2014-#7
Correct descriptions about equations.
Update supported version of PHP
Merge pull request #14 from matsuo/update-supported-php-version

Update supported version of PHP
News update etc.
News update and remove personal links on the top of page.
IE issue fixed.
Add migration guide, and modified api document.
Update migration guide
Ver.4.6 released messages
Integrated the "lab" site.
Some files are deleted
Study meeting report in the news.
Fix spelling in news.html