refactor(excel-filter): use condition friendly name

Author: simeonoff

projects/igniteui-angular/src/lib/grids/filtering/excel-style/excel-style-default-expression.component.html

@@ -8,7 +8,7 @@
         <igx-icon *ngIf="expressionUI.expression.condition" family="imx-icons" [name]="getIconName()"></igx-icon>
         <igx-icon *ngIf="!expressionUI.expression.condition">filter_list</igx-icon>
     </igx-prefix>
-    <igx-select-item *ngFor="let condition of conditions" [value]="condition" [selected]="isConditionSelected(condition)">
+    <igx-select-item *ngFor="let condition of conditions" [value]="condition" [text]="getConditionFriendlyName(condition)" [selected]="isConditionSelected(condition)">
         <div class="igx-grid__filtering-dropdown-items">
             <igx-icon family="imx-icons" [name]="getCondition(condition).iconName"></igx-icon>
             <span class="igx-grid__filtering-dropdown-text">{{translateCondition(condition)}}</span>

projects/igniteui-angular/src/lib/grids/filtering/excel-style/excel-style-default-expression.component.ts

@@ -155,6 +155,10 @@ export class IgxExcelStyleDefaultExpressionComponent implements AfterViewInit {
         return this.column.filters.condition(value);
     }
 
+    public getConditionFriendlyName(name: string): string {
+        return this.grid.resourceStrings[`igx_grid_filter_${name}`] || name;
+    }
+
     public onValuesInput(eventArgs) {
         this.expressionUI.expression.searchVal = DataUtil.parseValue(this.column.dataType, eventArgs.target.value);
     }