Added Image Slider

Added Image Slider
Fixed Indent
Indentation Error Fixes
Added an overlay bar
Made menu translucent
Merge branch 'master' of https://github.com/samarjeet27/fossasia.github.io into samarjeet27-master

Conflicts:
	index.html
Merge branch 'samarjeet27-master'

Conflicts:
	index.html
Merge branch 'master' of https://github.com/fossasia/fossasia.github.io