CSVImporter - normalize ALL new lines characters #1140

Really fix the new line issues in the CSV Importer this time, replace any
unicode new line character with \n.
Merge branch 'develop' of git://github.com/ushahidi/Ushahidi_Web into develop
Allow iframes through default xss clean filter
Make htmlpurifier the default XSS filter, and set cache path for htmlpurifier
Handle bad file encodings when importing CSV files #1140

Convert the file encoding to UTF-8.
Fall back to original data if preg_replace fails for some reason
Use php native extension check function, and remove Modulecheck library

Conflicts:
	application/controllers/scheduler/s_email.php