Merge pull request #1 from qbittorrent/master

update
Add feature: copy tracker URL
Copy tracker URL to the clipboard

 - code cleanup
Change icon for "Copy tracker URL"
Fix spacing in Russian translation in article list
Merge pull request #2 from qbittorrent/master

Up-to-date commit
Refactor windows installer script to accomodate further translation. Also split it up so it is easier to maintain and extend.
Create language tables for all the available languages.
Updated translations.nsi
Support adding of windows firewall rule.
Change title of installer to show the qbt's version.
Split removal of configuration files to 2 options.
Add version info to the installer executable.
Add more info to the system about the unistaller.
Offer to launch qbt after installation.
The installer now checks if qbt is running before proceeding.
Run unistaller silently before proceeding with the install.
Added some logging for a few actions.
Reserve dll for faster execution.
Remove file associations only if qbt is associated. Fixes issue #307.