Allow screenshot renaming & deletion.
Standardize urls to prevent duplicates in our store file.
Fix file headers.
Fix rom and save state urls in library when migrating to new version.
Make sure to use valid file names when renaming screenshot files.
Use relative paths for roms, savestates and screenshots.
Fix some path issues introduce in the last commits.
Add debug action to remove duplicated save states.
Minor fixes.
Add PSP controller image and update ngp controller.
Minor fixes & refactoring and stuff.
Fix PSP swapped dpad/analog button highlighting
Fix PSP swapped Start/Select button highlighting
Merge pull request #1495 from zachcoyle/master

Fix PSP swapped Start/Select button highlighting
Fix ‘add untracked save states’ debug action.
Clean up & prepare for translations.
Update Sparkle framework to 1.7.1, fixes OS X 10.10 support and restored workaround for delivering updates via SSL https://gist.github.com/clobber/25caf8bb8fb29a290bff
Fix updater/appcast URLs
Prepare some more for translation.
Update PPSSPP submodule ref