Issue #1841896 by TravisCarden: Fixed file permissions in core/misc/ui/themes/base/images/.

...misc/ui/themes/base/images/ui-bg_flat_0_aaaaaa_40x100.png

...isc/ui/themes/base/images/ui-bg_glass_55_fbf9ee_1x400.png

...isc/ui/themes/base/images/ui-bg_glass_65_ffffff_1x400.png

...isc/ui/themes/base/images/ui-bg_glass_75_dadada_1x400.png

...isc/ui/themes/base/images/ui-bg_glass_75_e6e6e6_1x400.png

...emes/base/images/ui-bg_highlight-soft_75_cccccc_1x100.png

core/misc/ui/themes/base/images/ui-icons_222222_256x240.png

core/misc/ui/themes/base/images/ui-icons_2e83ff_256x240.png

core/misc/ui/themes/base/images/ui-icons_454545_256x240.png

core/misc/ui/themes/base/images/ui-icons_888888_256x240.png

core/misc/ui/themes/base/images/ui-icons_cd0a0a_256x240.png