365visual Photo portable mode

While this file sits next to photocraft.exe, 365visual Photo keeps its preferences, brush presets,
crash-recovery autosaves and startup state in the 365visual Photo Data folder beside it, and writes
nothing to %APPDATA%. Copy the whole folder to move 365visual Photo with its settings.

Delete this file to use the normal per-user settings folder (%APPDATA%\365visual Photo) instead.
If 365visual Photo Data can't be written (for example on a read-only drive), 365visual Photo says so and
uses %APPDATA%\365visual Photo instead.
