Lowered browse delay. Browsing should feel faster.

This affects animation delay, as well as when a "Scanning" message will be shown.
Not completely removed as we would have uneccessary load (and consequently: dropped frames) due to the ViewFlipper always switching to the "Scanning" page and back instantly and uneccessarily.
Minor Filemanageractivity cleanup.
Added translations.

Fully translated languages added:
German
Spanish
Croatian
Hungarian
Dutch
Portuguese (BR)
Turkish
Greek
Russian

Almost complete:
French
Japanese
Portuguese
Upped version to 1.0.0 b6.