customize the appearance of icons lucapa in the theme BlueSky

The topic BlueSky was Dabuleni few variables in stake of font icons for buttons lucapa.

To change icons you need to lucapa Controls\Lookup\_Variables.less to change the value of the relevant variables:

@lookupShowObjectBtn: '\e879';    // The button "Show object". 
@lookupLookupBtnIcon: '\e81d';    // Button "Select". 
@lookupClearBtnIcon: '\e806';     // The "Clear" Button. 

Select from the following icons: