Double click, configuration upgrade, fixes

• UI
  • Handle double-click in folder navigation.
  • Single click selects the folders and images
  • Uniform task description box widths
  • Task launch button added to preview page
  • Back button added to task launch, preview, run pages
  • Folder rename shortcut key working only if enabled
• Infrastructure
  • Refactored configuration loading: separate files for separate aspects
• Development:
  • Include script files in Alphabetical order
  • CacheKiller added to script files
  • New Application service, which loads global settings, check user, redirects if needed
  • Connect-history-api-fallback added
  • Started development of anchor scrolling