Added paging for incoming jeeqs
handled un-logged user.
added paging for feedbacks for a specific submission.
add pdf controls for startpage, endpage, startoffset, endoffset and fix add challenge and edit challenge
fix labels
add pdf preview
create a new class to handle paging.
create a new class to handle paging.
Applied review changes
Merge remote-tracking branch 'origin/master'
add default values and onchange behavior
removed inline styles from the paging div and added it to jeeqs.css.
code convention compliance for css
removed debugging code.
make incoming jeeqs for a submission span entirely acrosss the page.
show own submission without feedback controls.
code convention compliance for css, remove code related to vertical scroll (scribd) and code style compliance for jinja2 templates
set placeholder for pdf controls
add heading for pdf preview
set pdf_endpage to the last page number