Add support for removing a word

Reference: Amebis/BesClient#79

service.js

@@ -2942,10 +2942,10 @@ class BesPopup extends HTMLElement {
         .bes-replacement-btn:hover{
           background-color: #1976f0;
         }
-          .bes-replacement-btn:focus{
+        .bes-replacement-btn:focus{
           outline: -webkit-focus-ring-color auto 1px;
         }
-          .bes-replacement-btn:focus-visible{
+        .bes-replacement-btn:focus-visible{
           outline: -webkit-focus-ring-color auto 1px;
         }
         .bes-replacement-div{
@@ -3123,7 +3123,15 @@ class BesPopup extends HTMLElement {
     match.match.replacements.forEach(replacement => {
       const replacementBtn = document.createElement('button')
       replacementBtn.classList.add('bes-replacement-btn')
-      replacementBtn.textContent = replacement.value
+      if (replacement.value.length > 0)
+        replacementBtn.textContent = replacement.value
+      else {
+        replacementBtn.style.textDecoration = 'line-through'
+        replacementBtn.textContent = match.match.context.text.substr(
+          match.match.context.offset,
+          match.match.context.length
+        )
+      }
       replacementBtn.addEventListener('click', () => {
         if (allowReplacements) {
           service.replaceText(el, match, replacement.value)