Mask password and make root CA optional (#408)

## What is the goal of this PR?

Update password mask & root CA optionality.

## What are the changes implemented in this PR?

Update password mask & root CA optionality.

Author: lriuui0x0

src/components/Login/LoginPage.vue

@@ -49,7 +49,7 @@
             </div>
             <div class="row" v-if="isCluster">
               <h1 class="label">Password:</h1>
-              <input class="input" v-model="password">
+              <input class="input" type="password" v-model="password">
             </div>
             <div class="row flex-end">
               <loading-button v-on:clicked="connect()" :text="isCluster ? 'Connect to TypeDB Cluster' : 'Connect to TypeDB'" :loading="isLoading" className="btn login-btn"></loading-button>

src/store/actions.js

@@ -44,7 +44,9 @@ export const initTypeDB = async (context, isCluster) => {
     global.typedb = isCluster ?
         await TypeDB.clusterClient(
             [ServerSettings.getServerUri()],
-            new TypeDBCredential(ServerSettings.getUsername(), ServerSettings.getPassword(), ServerSettings.getRootCAPath()),
+            ServerSettings.getRootCAPath() ?
+                new TypeDBCredential(ServerSettings.getUsername(), ServerSettings.getPassword(), ServerSettings.getRootCAPath()) :
+                new TypeDBCredential(ServerSettings.getUsername(), ServerSettings.getPassword())
         ) :
         TypeDB.coreClient(ServerSettings.getServerUri());
     context.dispatch('loadDatabases');