feat(accounting): add view transactions component

Add view transactions component, ability to revert transaction and
viewing journal entry details.

Fixes #139

src/app/accounting/revert-transaction/revert-transaction.component.html

@@ -0,0 +1,30 @@
+<div *ngIf="!data.reverted; else reverted">
+
+  <h1 mat-dialog-title>Revert Transaction</h1>
+  <div mat-dialog-content>
+    <p>Are you sure you want to revert this transaction?</p>
+    <mat-form-field fxFlexFill>
+      <textarea matInput placeholder="Comments" [formControl]="comments"></textarea>
+    </mat-form-field>
+  </div>
+  <mat-dialog-actions align="end">
+    <button mat-button mat-dialog-close>No</button>
+    <button mat-button [mat-dialog-close]="{ revert: true, comments: comments.value }">Yes</button>
+  </mat-dialog-actions>
+
+</div>
+
+<ng-template #reverted>
+
+    <h1 mat-dialog-title>Transaction Reverted</h1>
+    <div mat-dialog-content>
+      <h4>Success!</h4>
+      <p>A new journal entry has been created to reverse this transaction:</p>
+      <p>Transaction ID: {{ data.transactionId }}</p>
+    </div>
+    <mat-dialog-actions align="end">
+      <button mat-button mat-dialog-close>Close</button>
+      <button mat-button [mat-dialog-close]="{ redirect: true }">Redirect to New Transaction</button>
+    </mat-dialog-actions>
+
+</ng-template>

src/app/accounting/revert-transaction/revert-transaction.component.spec.ts

@@ -0,0 +1,25 @@
+import { async, ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { RevertTransactionComponent } from './revert-transaction.component';
+
+describe('RevertTransactionComponent', () => {
+  let component: RevertTransactionComponent;
+  let fixture: ComponentFixture<RevertTransactionComponent>;
+
+  beforeEach(async(() => {
+    TestBed.configureTestingModule({
+      declarations: [ RevertTransactionComponent ]
+    })
+    .compileComponents();
+  }));
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(RevertTransactionComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});

src/app/accounting/revert-transaction/revert-transaction.component.ts

@@ -0,0 +1,20 @@
+import { Component, OnInit, Inject } from '@angular/core';
+import { MatDialogRef, MAT_DIALOG_DATA } from '@angular/material';
+import { FormControl } from '@angular/forms';
+
+@Component({
+  selector: 'mifosx-revert-transaction',
+  templateUrl: './revert-transaction.component.html',
+  styleUrls: ['./revert-transaction.component.scss']
+})
+export class RevertTransactionComponent implements OnInit {
+
+  comments = new FormControl('');
+
+  constructor(public dialogRef: MatDialogRef<RevertTransactionComponent>,
+              @Inject(MAT_DIALOG_DATA) public data: any) { }
+
+  ngOnInit() {
+  }
+
+}