CLI inserts Haulmont Apache 2 copyrights to generated polymer client files

[jreznot]

Environment

• CLI version: 2.0.3

Description of the bug or enhancement

• Minimal reproducible example

1. Create polymer client using create-polymer-client
2. Open demo-login.html

• Actual behavior

All HTML files contain Haulmont Apache 2 copyright:

<!--
  ~ Copyright (c) 2008-2018 Haulmont.
  ~
  ~ Licensed under the Apache License, Version 2.0 (the "License");
  ~ you may not use this file except in compliance with the License.
  ~ You may obtain a copy of the License at
  ~
  ~     http://www.apache.org/licenses/LICENSE-2.0
  ~
  ~ Unless required by applicable law or agreed to in writing, software
  ~ distributed under the License is distributed on an "AS IS" BASIS,
  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  ~ See the License for the specific language governing permissions and
  ~ limitations under the License.
  -->
``

[alexander-shustanov]

Also deleted copyright from uberjar and war xml configs