Add "inclusive" definition

app/components/table-filters/pablo-number-range.js

@@ -15,8 +15,8 @@ export default Component.extend({
     filter_text: Ember.computed('{lower_bound,upper_bound,display_addition,inclusive}', function () {
         var lower_limit, upper_limit, range, isInclusive;
         isInclusive = this.get('inclusive');
-        lower_limit = this.get('lower_bound') || '-';
-        upper_limit = this.get('upper_bound') || '-';
+        lower_limit = this.get('lower_bound') || 'a';
+        upper_limit = this.get('upper_bound') || 'b';
         range = isInclusive ? `[${lower_limit}, ${upper_limit}]` : `(${lower_limit}, ${upper_limit})`;
         if (this.get('display_addition')) {
             range += " " + this.get('display_addition');

app/templates/components/table-filters/pablo-number-range.emblem

@@ -14,6 +14,7 @@ ui-dropdown class='left basic labeled top left pointing icon select-number' acti
         .ui.pointing.red.basic.label {{error}}
     .item
       ui-checkbox class='item' checked=inclusive label=(t 'number.range.inclusive') onChange=(action 'toggle_inclusive')
+      ui-popup tagName="i" class="info circle icon" html=(t 'number.range.inclusive_explanation')
 
     .divider
     .options-container