Chore: Upgraded to angular 15

Chore: Moved from angular/flex-layout to Tailwind
Chore: Upgrade completed

overlord/src/app/payment/payment-dialog.component.html

@@ -13,8 +13,8 @@
           autocomplete="off"
         />
         <mat-hint *ngIf="accBal">
-          Balance as on Date: <strong>{{ accBal.date | currency: 'INR' | accounting }}</strong> /
-          Final balance: <strong>{{ accBal.total | currency: 'INR' | accounting }}</strong>
+          Balance as on Date: <strong>{{ accBal.date | currency : 'INR' | accounting }}</strong> /
+          Final balance: <strong>{{ accBal.total | currency : 'INR' | accounting }}</strong>
         </mat-hint>
       </mat-form-field>
       <mat-autocomplete
@@ -42,6 +42,8 @@
   </form>
 </div>
 <div mat-dialog-actions>
-  <button mat-button [mat-dialog-close]="false" cdkFocusInitial>Cancel</button>
-  <button mat-button (click)="accept()" color="primary">Ok</button>
+  <button mat-raised-button color="warn" [mat-dialog-close]="false" cdkFocusInitial class="mr-5">
+    Cancel
+  </button>
+  <button mat-raised-button color="primary" (click)="accept()">Ok</button>
 </div>