fixed delete bug, code refactoring, improved UI

web/src/components/IntentItem.js

@@ -21,9 +21,10 @@ class IntentItem extends Component {
                 <Button className={this.props.selectedIndex===this.state.index ? 'IntentItem-selected' : 'IntentItem'}
                         onClick={()=>{this.state.onClick(this.state.intent,this.state.index)}}
                         flat
+                        disabled={this.props.waiting}
                         tooltipDelay={INTENT_TITLE_TOOLTIP_DELAY}
                         tooltipLabel={this.state.intent.intentName.length>INTENT_TITLE_MAX_LENGTH ? this.state.intent.questions[0] : ''}>
-                            {this.state.index+1}. {buttonTitle}
+                            {buttonTitle}
                 </Button>  
                 <br></br>
             </div>