added ajax setup method
removed
removed
added method to get sub-categories, inherited controller from admincontroller
added methods for rendering view based on type, and edit method
single table fr categories and sub cat, added validations and associations
modified association and validation
modified association and validations
view for new question
partial for question and its contents
mcq new renders _question
subjectives new renders _question
mcq show
show added
changed application layout, assigned it to admin
added routes for new methods(get sub categories,get form on type)'
modified migration file
added