fix duplicated source adding
update wagn version
fix describe wrong thing in rspec
open uri's metas is not supported in ruby<2.0. changed to meta now.
update a rspec case
Merge pull request #85 from chuenlok/source_preview_optimization

fixed iframable is not working on ruby<2.0
speed up contribution count
fixed contribution count
Merge pull request #86 from xithan/master

speed up contribution count
Merge pull request #82 from chuenlok/duplicate_sources

fix duplicated sources adding
fix error while adding normal source
Merge pull request #87 from chuenlok/duplicate_sources

fix error while adding normal source
Merge remote-tracking branch 'wagn/master'

Conflicts:
	mod/wikirate/set/self/wikirate_source_preview_page.rb