Added support for a specific style of COBOL

Cobol uses Sections and Paragraphs to group code. Paragraphs are extremely difficult to identify via regular expressions, however sections are quite easy (presuming that line numbering is not being used, which generally is the case).

One possible addition is to add Divisions. Not so useful in my case, but others may find it useful.

Of course, you may not wish to have COBOL as a definition in your project. However I would suggest that a lot of people have legacy systems running COBOL, and brackets is a perfect lightweight viewer.