updated SVG icons from IntelliJ IDEA Community Edition to latest versions that include license header; added license header to SVGs where it were missing

flatlaf-theme-editor/src/main/resources/com/formdev/flatlaf/themeeditor/icons/close.svg

@@ -1,3 +1,4 @@
+<!-- Copyright 2000-2021 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file. -->
 <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
   <path fill="#6E6E6E" fill-rule="evenodd" d="M7.99494337,8.70506958 L4.85408745,11.8540874 L4.14698067,11.1469807 L7.29493214,8.00505835 L4.14698067,4.85710688 L4.85408745,4.1500001 L8.00204181,7.29795446 L11.1439612,4.1500001 L11.851068,4.85710688 L8.70204624,7.99795888 L11.851068,11.1469807 L11.1439612,11.8540874 L7.99494337,8.70506958 Z"/>
 </svg>

flatlaf-theme-editor/src/main/resources/com/formdev/flatlaf/themeeditor/icons/findAndShowNextMatches.svg

@@ -1,3 +1,4 @@
+<!-- Copyright 2000-2021 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file. -->
 <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
   <polygon fill="#6E6E6E" fill-rule="evenodd" points="4.912 4.175 8.738 8 4.912 11.825 6.088 13 11.088 8 6.088 3" transform="matrix(0 1 1 0 0 0)"/>
 </svg>

flatlaf-theme-editor/src/main/resources/com/formdev/flatlaf/themeeditor/icons/findAndShowPrevMatches.svg

@@ -1,3 +1,4 @@
+<!-- Copyright 2000-2021 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file. -->
 <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
   <polygon fill="#6E6E6E" fill-rule="evenodd" points="4.912 4.175 8.738 8 4.912 11.825 6.088 13 11.088 8 6.088 3" transform="matrix(0 -1 -1 0 16 16)"/>
 </svg>

flatlaf-theme-editor/src/main/resources/com/formdev/flatlaf/themeeditor/icons/matchCase.svg

@@ -1,3 +1,4 @@
+<!-- Copyright 2000-2021 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file. -->
 <svg width="16" height="16" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
 <g id="matchCase">
 <g id="Cc">

flatlaf-theme-editor/src/main/resources/com/formdev/flatlaf/themeeditor/icons/menu-open.svg

@@ -1,3 +1,4 @@
+<!-- Copyright 2000-2021 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file. -->
 <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
   <path fill="#6E6E6E" fill-rule="evenodd" d="M4.32342122,7 L2,11.0147552 L2,7 L2,5 L2,3 L6.60006714,3 L7.75640322,5 L14,5 L14,7 L4.32342122,7 Z M4.89129639,8 L16,8 L13.1082845,13 L2.00248718,13 L4.89129639,8 Z"/>
 </svg>

flatlaf-theme-editor/src/main/resources/com/formdev/flatlaf/themeeditor/icons/regex.svg

@@ -1,3 +1,4 @@
+<!-- Copyright 2000-2021 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file. -->
 <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
   <g fill="none" fill-rule="evenodd">
     <rect width="2" height="2" x="3" y="11" fill="#6E6E6E"/>

flatlaf-theme-editor/src/main/resources/com/formdev/flatlaf/themeeditor/icons/words.svg

@@ -1,3 +1,4 @@
+<!-- Copyright 2000-2021 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file. -->
 <svg width="16" height="16" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
 <g id="words">
 <path id="W" d="M14.5213 3.01418L11.6986 13H9.82624L8.01064 6.68794L6.19504 13H4.3227L1.5 3.01418H3.67021L5.3156 9.53901L7.14539 3H8.93262L10.7482 9.53901L12.4078 3.01418H14.5213Z" fill="#6E6E6E"/>