Allow user to quit app with back button.
Merge pull request #529 from sigmabeta/quit-app-with-back

Allow user to quit Android app with back button.
Fixed issue with DSP Dump not closing files.

When dumping the two DSP ROMs to file, if it failed to open one of them, neither will be closed. It should now close any that were opened.
Merge pull request #530 from workhorsy/master

Fixed issue with DSP Dump not closing files.
GCI Folder: correctly identify region of sysmenu
Store ini sections in a std::list (rather than vector) to prevent unexpected pointer invalidation with use of GetOrCreateSection.
Merge pull request #534 from jordan-woyak/ini-file-fix

Store ini sections in a std::list to prevent pointer invalidation.
Merge pull request #531 from LPFaint99/memcard

GCI Folder: correctly identify region of sysmenu
Implement ViewHolder pattern on the GameListAdapter.