Add support for full-text search (#7)

src/app/components/option-picker/option-picker.component.html

@@ -1,14 +1,18 @@
 <ion-list>
+  <ion-item button (click)="onSelect('search_everywhere')">
+    <i slot="start" class="fa fa-search"></i>
+    <ion-label>Search Everywhere</ion-label>
+  </ion-item>
   <ion-item button (click)="onSelect('html_export')">
-    <ion-icon slot="start" name="menu"></ion-icon>
+    <i slot="start" class="fa fa-code"></i>
     <ion-label>Export to HTML Site</ion-label>
   </ion-item>
   <ion-item button (click)="onSelect('toggle_darkmode')">
-    <ion-icon slot="start" [name]="isDark() ? 'sun' : 'moon'"></ion-icon>
+    <i slot="start" class="fa" [ngClass]="isDark() ? 'fa-sun' : 'fa-moon'"></i>
     <ion-label>{{ isDark() ? 'To The Light!' : 'Go Dark...' }}</ion-label>
   </ion-item>
   <ion-item button (click)="onSelect('logout')">
-    <ion-icon slot="start" name="exit"></ion-icon>
+    <i slot="start" class="fa fa-sign-out-alt"></i>
     <ion-label>Logout</ion-label>
   </ion-item>
 </ion-list>

src/app/components/option-picker/option-picker.component.ts

@@ -1,6 +1,7 @@
 import {Component, Input, OnInit} from '@angular/core';
 import {Router} from '@angular/router';
 import {ApiService} from '../../service/api.service';
+import {PopoverController} from '@ionic/angular';
 
 @Component({
   selector: 'app-option-picker',
@@ -10,10 +11,12 @@ import {ApiService} from '../../service/api.service';
 export class OptionPickerComponent implements OnInit {
   @Input() toggleDark: () => void;
   @Input() isDark: () => boolean;
+  @Input() showSearch: () => void | Promise<void>;
 
   constructor(
       protected api: ApiService,
       protected router: Router,
+      protected popover: PopoverController,
   ) { }
 
   ngOnInit() {}
@@ -25,6 +28,9 @@ export class OptionPickerComponent implements OnInit {
       window.location.href = '/auth/logout';
     } else if ( key === 'toggle_darkmode' ) {
       this.toggleDark();
+    } else if ( key === 'search_everywhere' ) {
+      this.showSearch();
+      this.popover.dismiss();
     }
   }
 }