* citra_qt: correct spelling in configuration
* citra_qt/camera: Changed the order of the translation
The translation may not correspond to "couln't load" and "the camera", so create two cases which can get translated individually.
Also add a space after "the camera".
* citra_qt/camera: use the same syntax for the filter in "still_image_camera.cpp" as in "configure_camera.cpp"
* citra_qt/camera: the config should only get added if it's not empty
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