Another small step to overcome the double page limitation. (Refactoring)

Changed method signatures:
- Statusbar.set_page_number
- Statusbar.set_resolution



git-svn-id: svn+ssh://svn.code.sf.net/p/mcomix/code@968 ef8490bc-f317-4725-81ed-e95a9aca1bcf
Fixed 'Continue reading' not working for files from command line.

From: Boris Bogar <eddie81@users.sf.net>

git-svn-id: svn+ssh://svn.code.sf.net/p/mcomix/code@969 ef8490bc-f317-4725-81ed-e95a9aca1bcf
Updated ChangeLog

git-svn-id: svn+ssh://svn.code.sf.net/p/mcomix/code@970 ef8490bc-f317-4725-81ed-e95a9aca1bcf