Add config option to force verification (#29)

* Add config option to force verification

If this is set, users will not have the option to skip verification
on login (they will still be able to reload and continue unverified,
currently). Default off.

* Test for complete security dialog

* I hadn't set up prettier

test/test-utils/test-utils.ts

@@ -108,6 +108,7 @@ export function createTestClient(): MatrixClient {
 
         secretStorage: {
             get: jest.fn(),
+            isStored: jest.fn().mockReturnValue(false),
         },
 
         store: {
@@ -128,6 +129,7 @@ export function createTestClient(): MatrixClient {
             getDeviceVerificationStatus: jest.fn(),
             resetKeyBackup: jest.fn(),
             isEncryptionEnabledInRoom: jest.fn(),
+            getVerificationRequestsToDeviceInProgress: jest.fn().mockReturnValue([]),
         }),
 
         getPushActionsForEvent: jest.fn(),