Update/Add some functions#6

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Al-Azif wants to merge 4 commits intopsxdev:firmware505from

Al-Azif:firmware505

Commits on Mar 19, 2019

Add/Update CommonDialog, ErrorDialog, WebDialog, UserService, SystemService, SysModule, and Pad
Al-Azif
committed

Commits on Mar 21, 2019

Add libSceSaveData
Al-Azif
committed

Commits on Mar 22, 2019