Clarify in settings that PNG image format is not truly lossless.

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Version 1.48 (Work in progress)

Version 1.47.3 (Work in progress)

FIXED   Grids were being drawing too faintly.

UPDATED Minor accessibility improvements.

UPDATED Clarify in settings that PNG image format is not truly lossless.

Version 1.47.2 (2019/09/04)

    <string name="exposure_compensation_seekbar">Seekbar to change exposure compensation</string>

    <string name="preference_image_format_summary">Select the file format used for saving photos. This affects \"standard\" (not RAW) photos. Note that PNG format is not truly lossless, instead it is converted from a JPEG at 100%% quality.\n%s</string>

    <!-- There's no point translating the What's New text - it'll be updated constantly, and change each version -->

    <string name="whats_new_text">

        <small>[This dialog is shown when Open Camera is updated. You can disable it under

            <ListPreference

                android:key="preference_image_format"

                android:title="@string/preference_image_format"

                android:summary="%s"

                android:summary="@string/preference_image_format_summary"

                android:entries="@array/preference_image_format_entries"

                android:entryValues="@array/preference_image_format_values"

                android:defaultValue="preference_image_format_jpeg"