Changed look and minor fixes

Removed post bar from newsfeed.xml
Removed profile_course_list.xml, profile_course_box.xml
Fixed ProfileCourseAdapter so that it uses course_list_box.xml
Fixed ProfileFragment so its possible to go to the course page from
Profile
Fixed gotoCoursePage() in MainEntry for above
Updated refresh.png icon
Updated look of fragment_course_list.xml
Updated look of course_list_box.xml
Updated spinner_text_layout.xml
Changed CoursesFragment & CourseListAdapter to include a "My Courses"
header
Changed look of card_style.xml, post_box.xml, newsfeed.xml, profile.xml,
fragment_course_page.xml
Merge branch 'master' of https://github.com/BroncoNetwork/App

Conflicts:
	BroncoNetwork/src/cs356/bronconetwork/MainEntry.java