Screenshot update (Breaking-M)

Included in this release:

• Mods: Added the getScreenshotCollection() method to access the screenshots.
• Mods: Multiple mod screenshots are now supported.
• Tags: Fixed the tag collection's tag loading mechanism.
• DB: Updated to Mod DB v2.0.10.

Breaking changes

• The mod methods hasImage(), getImageURL() and getImageFile() have been removed.