Update translation PL

Update translation form MAC, Wak On Lan and dual pane.
Fixed the path to the IMDB website.
Change the comparison order.
Reduced redundant code.
Check the title if its null.
Added a method to remove all listeners.
Fix possible segfault.
Stop service when the main activity is destroyed.
Merge pull request #25 from PiterEL/patch-1

Update translation PL
Updated changelog.
Merge branch 'master' of https://github.com/rsiebert/TVHClient
Fixed polish translation.
Merge pull request #1 from rsiebert/master

mereged