Valama: Fix valadoc comment.
Valama: Fix alignment of package list.

 * Remove leading whitespaces from pkg-config package list descriptions.
Valama: Increase package dialog window size.
Guanako: Fix package listing.

 * Sort package names case insensitive.
 * Don't include last (empty) line from pkg-config output (null string).
Valama: Add rudimental valadoc browser.