fix component interaction with sub-components

pdb-js/src/app/limit-by/limit-by.component.ts

@@ -1,18 +1,18 @@
-import { Component, OnInit, Input} from '@angular/core';
+import { Component,  Input} from '@angular/core';
+import {FormControl} from '@angular/forms';
 
 @Component({
   selector: 'pdb-limit-by',
   templateUrl: './limit-by.component.html',
   styleUrls: ['./limit-by.component.scss']
 })
-export class LimitByComponent implements OnInit {
+export class LimitByComponent {
 
-  @Input() limit: number;
+  limitBy: string = "NO_LIMIT";
+  
+  limit = 10;
 
-  @Input() limitBy: string;
-
-  constructor() { }
-
-  ngOnInit() {
+  constructor() {
+    
   }
 }