Announcement System

Created a database to store the announcements for the announcement
system. Currently displays the announcements, but working on it to
display in manner that I want. Also, I need to add a the option to be
able to send announcements from the site
assignments tab now lists assignments as well as viewable modal in course page
made announcements table look good
view assignments now supports multiple types
added course functionality to sidebar on main page
added grades feature for sidebar on main page
changed name on files so it is easier to understand
added list all students feature for course page
added headers to tables
Updated Announcement Box

Announcement system now displays the announcements in manner decided. I
added sql so that it displays only announcements relevant to the user
(student in this case). Still need to do it specific professor and ta.
I need to figure out a way to add/post to database and a way to reduce
posts shown to a set number. Also need to figure out a way to count
correctly in id in db. Atm, the system works perfectly with the info in
the db.
Merge branch 'master' of https://github.com/jNunez1993/Gradebook-Management-System

Conflicts:
	gatorLearning.php
Merge branch 'master' of https://github.com/jNunez1993/Gradebook-Management-System
announcements bug fixed