0.4.0

Added

• Regenerar button on the report: asks the hub for a new collection of
  competitor prices, shows its progress ("A recolher preços: 40 de 185
  páginas") and reloads the report when it ends. A collection already
  running when the page opens is followed at once. When a collection
  ended a moment ago, it says from what time a new one can be asked.

Changed

• "Conferir vínculo" is now "Diferença suspeita", with an explanation
  that the cause is usually the KuantoKusta page, not the product link.