Change master password field type to 'password' when password is generated

Fixes: https://github.com/lesspass/lesspass/issues/217

src/components/MasterPassword.vue

@@ -31,8 +31,7 @@
              v-bind:value="value"
              v-bind:placeholder="label"
              v-on:input="updateValue($event.target.value)"
-             v-on:keyup.enter="$emit('keyupEnter')"
-             v-on:blur="hidePassword($refs.passwordField)">
+             v-on:keyup.enter="$emit('keyupEnter')">
       <span class="input-group-btn"
             v-if="fingerprint && value"
             v-on:click="togglePasswordType($refs.passwordField)">
@@ -99,7 +98,7 @@
         }
       },
       hidePassword(element){
-        element.type = 'password';
+        this.$refs.passwordField.type = 'password';
       },
       getColor(color) {
         var colors = ['#000000', '#074750', '#009191', '#FF6CB6', '#FFB5DA', '#490092', '#006CDB', '#B66DFF', '#6DB5FE', '#B5DAFE', '#920000', '#924900', '#DB6D00', '#24FE23'];

src/views/PasswordGenerator.vue

@@ -170,11 +170,13 @@ export default {
     cleanErrors() {
       clearTimeout(this.cleanTimeout);
       this.passwordGenerated = "";
+      this.$refs.masterPassword.hidePassword();
     },
     cleanFormInSeconds(seconds = 15) {
       this.cleanTimeout = setTimeout(() => {
         this.masterPassword = "";
         this.passwordGenerated = "";
+        this.$refs.masterPassword.hidePassword();
       }, 1000 * seconds);
     },
     generatePassword() {