Merge pull request #187 from ravindrakhokharia/master

Fixed issue #8910: Fixed added to output/render output of file data
Fixed issue #8910: Fixed added to output/render output of file data, using render routine of Bigfile class
Merge branch 'master' of https://github.com/LimeSurvey/LimeSurvey

Conflicts:
	application/libraries/BigData.php