Sequence information is now solely taken from the attributes of the
a-tag. Instead of messing around with the text in nested tag and trying
to read the sequence type from the title, all info can be accessed
through the attributes of the a-tag. fixes #19
Added margins to items. Separated group and child views in
CourswareContentViewer in order to get a consistent look. #21
Reverted change in last commit. #21
Removed unnecessary url in item text. #20
Increased text size and made most items bold. #20