add plugins for JPEG-XR/DDS/JPEG 2000, add options for Folder/Catalog views

• add plugins for JPEG-XR/DDS/JPEG 2000
  • requested by @agungindrawan on issue #66
• add option for saving progress.ini
• add option for save width of Folder/Catalog views
• add option to start app with Folder/Catalog view
• fixed problem for opening images as relative path(Linux, rev2)
  • reported by @hisaruki on issue #3
• Rev2: Add Mac version(as dmg package)