Add upload field to students main page

Not restricted to admin only user currently as admin users are not
inplace yet. Currently errors of course
Added def for handling upload of files

After upload of file it should get read and redirect back to students
Added routing for the uploader button and form

Thanks to @rockwood for help
Corrected form_tag path to 'students' rather than 'student'
FIXED upload params typo
Added model student_uploader to intialize and read file

I wanted to make this just uploader.rb and allow it to be the general
uploaded but it appears that the file name must match the class name
with snake_case matching the CamelCase
Changed student calls to get_current_student

Also correctd probems with edit profile link, and delete profile links when editing one
Fixed typeos