Add feed title to imported entries

Also fixes one bug where a new feed was not saved and
improved HTML stripping a bit.

briar-api/src/org/briarproject/api/feed/Feed.java

@@ -83,14 +83,17 @@ public class Feed {
 				lastEntryTime);
 	}
 
+	@Nullable
 	public String getTitle() {
 		return title;
 	}
 
+	@Nullable
 	public String getDescription() {
 		return description;
 	}
 
+	@Nullable
 	public String getAuthor() {
 		return author;
 	}