Merge pull request #763 from AvadootNachankar/mongokit

MIS update (Student registration) and Bug fixes
File count for pandora videos implemented
Merge branch 'mongokit' of https://github.com/gnowledge/gstudio into mongokit
Merge pull request #765 from supriyasawant/mongokit

File count implemented for Pandora videos
Author error solved
Merge branch 'mongokit' of https://github.com/gnowledge/gstudio into mongokit
Iframe height (for showing HTML content) is now properly adjusted
Merge pull request #766 from kedar2a/mongokit

Iframe height (for showing HTML content) is now properly adjusted
Modifed accounts/login error message
removed print statements
Merge pull request #767 from anujag/mongokit

Modified login error message
View and Contents tab merged and Kept only View tab for topic page
Merge pull request #768 from sunnychaudhari/collection

View and Contents tab merged and Kept only View tab for topic page
Bug resolved in browse topic when user is not logged in
Merge pull request #769 from sunnychaudhari/collection

Bug resolved in browse topic when user is not logged in
bug resolved as displaying themes in both labguage
Merge pull request #770 from sunnychaudhari/collection

bug resolved as displaying themes in both language
Fix NoReverseMatch url issue - 'view_articles' [added key 'group_id' to context_variables dictionary]
lowerYearLimit changed to (currentYear-30) & upperYearLimit changed to (currentYear-14) [only for dob]
Updated tabs navigation (using next & previous buttons); and Widget updated for start_time & end_time (used jquery-ui-timepicker-addon's datetimepicker() function)