Fixes #3 - removal of duplicates
Fixes #7 - Logging of the sites
Merging of the fixes
Merge branch 'bug-005' into myfork
Merging of all fixes
Real fix for bug #3
More fixes for bug #3
Tries to aggressively get the tumblr page

Adds a backoff in case of failure and makes sure that the html page
is grabbed.
Wrong string was being read/written
Merge branch 'bug-007' into myfork

Conflicts:
	tumblr-photo-downloader.rb