StudentBundle initial commit

Set up bundle, created a "/student/add" route and student entity.
Finally implemented controller logic for adding students.
Delete

Added route and controller logic for deleting students.
Edit Student

Added route and logic to edit students information, also made it so
student id's must have 7 digits.
Seperate functions for add/delete/edit/upload.

Removed the code responsible for actually adding, deleting, editing,
and uploading from the routes for reusability. Created a BioException
class to handle sending messages back for display.
Upload Students

Uploading a .csv file of students in the proper format now completely
updates the student list.
Upload error handling

uploadStudentList now restores database in the event of a catchable
error.
Lookin' gooood

Initial commit of the template and style sheets. Added BioStudentBundle
to assetic.
Find Student

Finds students information by student ID. Will be rewritten to search
by any field and to display multiple students.
Display Students

Initial commit of page to display all students and allow deleting.
Student Id: Integer -> String
Easy Admin

The only way to edit and delete a student is to select from the
display. Less confusing.
Better find and display

Made it so the display_students route can be given a get request to
filter the students it displays. Now the find_student route redirects
to the correct page instead of displaying it.
Find & Sort

Sorting will not unfilter your results.
Missing 0's

Will automatically add leading 0's to student ID numbers.
A few fixes
Merge pull request #1 from dmhurley/student-bundle

Student bundle