ix WDSF provider to adapt to ranking list new format
1.5.0 version:
  - fix FFD provider year management
  - bump node-webkit: faster execution, and allow to set exported filename in "save file" dialog
  - bump underscore.string: names are properly capitalized
  - bump other libraries
  - enhance WDSF provider: detect competition of the same place and similar date
  - enhance providers: remove parenthesis in title,
  - enhance error reporting, especially while retrieving
  - link on data source from competition view
  - support 'ten' as result kind, in addition to 'lat' and 'std'
  - new cleaner utility to remove old competitions without contest results
  - order results from newer to older in excel exports
  - installer with data until 2013-11-28 for CVDS couples
- fix WDSF competition retrival: avoid duplicates without loosing data (allows multiple urls per competition)
- distinguish days of the same international competition
- cleaner removes couples results for unexisting competitions
- removes an unnecessary cleaner invokation
- allow competition to fail during update
- removes debug logs
- erase exsiting data with included values (CVDS)