Re-organize webcfg structure

WebConfigGenerator/src/components/fields/CheckboxGroup.vue

@@ -0,0 +1,18 @@
+<template>
+    <div class="form-item form-checkboxes">
+        <label v-for="checkbox in schema.fields" :for="checkbox.field" class="checkbox">
+            <input type="checkbox" :id="checkbox.field" :name="checkbox.field" :required="checkbox.required" v-model="value">
+            {{ checkbox.label }}
+            <span v-if="checkbox.required" class="req">*</span>
+        </label>
+    </div>
+</template>
+
+<script>
+    import Input from '../mixin/Input.vue';
+
+    export default {
+        mixins: [Input],
+        name: 'CheckboxGroup'
+    };
+</script>