Ensure images used for application icon are a "best quality" image
with consistent square size. A sharp, square image is vital for downstream
usage/installation.
File `images/logo.svg` was taken as canonical source. File was edited in
inkscape. It's document properties were cleaned up(incl. image metadata).
Document viewport was made to be a large size and square(256px^2).
Image itself was resized to ensure an 8px margin.
File `images/logo.png` was created from svg (inkscape `export to png`
command). Image was generated with high compression as well as ensuring
an alpha layer and square sizing.
File `src/icons/sqlitebrowser.png` was copied from `images/logo.png`.
Warning messages from libpng are printed when running SQLiteBrowser.
Messages state:
libpng warning: iCCP: known incorrect sRGB profile
Five messages are printed at once during execution and were isolated
to when preferences dialog was called. Problem was isolated to the
select flag images.
Opening ./src/translations/flags/{cn,de,fr,ru,us}.png images in GIMP
a warning about the iccp profile was produced. Profile was ID'd as:
sRGB IEC61966-2.1
IEC 61966-2.1 Default RGB colour space - sRGB
Manufacturer: IEC http://www.iec.ch
Copyright: Copyright (c) 1998 Hewlett-Packard Company
Opening ./images/sqlitebrowser.png image in GIMP also produced a
warning about the iccp profile. Profile was ID'd as:
HD 709-A
Copyright: Copyright Apple Computer, Inc., 2010
Pull Request corrects these images. Each affected image was run through
imagemagic convert command (convert <file.png> --strip <file.png>).
Images appear normal during program execution.
