Added the ability to download Documents.
Added the ability to download Documents.

-Pressing a file in the documents list view will now download the file
it links to.
-Added INTERNET and WRITE_EXTERNAL_STORAGE permissions required for this
to the manifest.
Merge commit '1481163' into fix

Conflicts:
	src/org/cascadelms/data/sources/FakeDataSource.java
Merge commit 'bcc1536' into fix

Conflicts:
	src/org/cascadelms/data/sources/FakeDataSource.java