Some code clean-ups.

[Boris Barbulovski]

More code clean-ups mainly regarding static instance() member.

br, Boris..
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.hohndel.org/pipermail/subsurface/attachments/20140209/b1fb7ca3/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 0001-PrintDialog-class-cleanup.patch
Type: text/x-patch
Size: 2594 bytes
Desc: not available
URL: <http://lists.hohndel.org/pipermail/subsurface/attachments/20140209/b1fb7ca3/attachment-0004.bin>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 0002-DownloadFromDCWidget-class-cleanup.patch
Type: text/x-patch
Size: 2570 bytes
Desc: not available
URL: <http://lists.hohndel.org/pipermail/subsurface/attachments/20140209/b1fb7ca3/attachment-0005.bin>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 0003-ShiftImageTimesDialog-class-cleanup.patch
Type: text/x-patch
Size: 3244 bytes
Desc: not available
URL: <http://lists.hohndel.org/pipermail/subsurface/attachments/20140209/b1fb7ca3/attachment-0006.bin>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 0004-PrintDialog-small-improvements.patch
Type: text/x-patch
Size: 1953 bytes
Desc: not available
URL: <http://lists.hohndel.org/pipermail/subsurface/attachments/20140209/b1fb7ca3/attachment-0007.bin>