Normal Description
Steps to Reproduce
render a button using a font awesome icon
e.g.:
<button iconSclass="z-icon-hashtag"/>
try this in different zkthemes
Current Result
iceblue/iceblue_c -> icon displays
breeze/sapphire -> no icon appears
Expected Result
same icons available in different themes
Root Cause
themes include different font awesome versions
e.g. hashtag was added in font awesome 4.5
https://fontawesome.com/v4.7.0/icon/hashtag
