Update whatsize.app to v6.
update openvanilla.rb to version 1.0.11

url has also changed
update qiyimedia to version 3.1.14

and add UTF-8 comment for older Rubies
Merge pull request #6838 from rolandwalker/update_qiyimedia

update qiyimedia to version 3.1.14
Merge pull request #6837 from rolandwalker/update_openvanilla

update openvanilla.rb to version 1.0.11
Merge pull request #6835 from ctwise/whatsize6

Update whatsize.app to v6.