Add more resource types to be translated

Before this commit, only gradients, palettes and potentially
brush tips could be translated.
This commit adds some other files types like .kpp presets,
.kwl window layouts, .kws workspaces, .kgm gamutmasks,
.png patterns, .myb presets and .svg symbol libraries
and brush tips.

CCMAIL:kde-i18n-doc@kde.org
CCMAIL:kimageshop@kde.org