modified header tab icons and default cover art icon
added new header tab icons (active state)
more updated header and player icons
added new volume icon for the player
further icon updates
more icon changes
Changed license from .md to .txt

For formatting purposes.
update pl.po
Merge pull request #330 from nalesnikld/master

update pl.po
Fix bug introduced cleaning up MRJAdapter on MacOSX
Merge pull request #328 from benhc123/patch-2

Changed license from .md to .txt
more updates
Merge pull request #331 from marcelinkaaa/fw6-icon-update

Fw6 icon update
changelog update
cleanup, easier way to test updatemessage reader.
update pl.po
Merge pull request #333 from nalesnikld/master

update pl.po
removed obsolete strings
.po files updated
fix de.po
translate new strings in ru.po
delete not used html tags
Merge pull request #329 from X-NicON/mfix

Update de and ru .po