Add missing console support to Internet Explorer.

Internet Explorer doesn't support the console functions unless it's running in developer mode. As a result it throws it's toys out the pram when a call is made to one off the console functions.

Add the console functions if they are missing.
Update change log for issue #70.
Merge pull request #70 from fyfe/fix-issue-70

Add missing console support to Internet Explorer.
Remove unused code from global.js
Remove unused file cast.js
Remove empty search.js
Remove unused code from include/xbmc.js
Remove unused app.js file.
Remove unused poster/fanart code.
Remove unused default.html
No need to redefine Ext.BLANK_IMAGE_URL
Remove unused checkWatchedInt
When inserting html tags don't do half a job.