show_send_button:true parameter not working for me.This pull is a fix for that issue (#1300)

fixes #1033 

CHANGES.md

@@ -7,6 +7,7 @@
 - #1188 Feature request: drag and drop file to HTTP Upload
 - #1268 Switch from SASS variables to CSS custom properties
 - #1278 Replace the default avatar with a SVG version
+- #1033 Setting show_send_button to true didn't work
 - #1306 added option `notification_delay`
 - #1305 added value 'all' for 'show_desktop_notifications' to notifiy even if converse.js is open
 

css/converse.css

@@ -10174,9 +10174,9 @@ body.reset {
       #conversejs .chatbox .sendXMPPMessage .chat-textarea.correcting {
         background-color: var(--chat-head-color-lighten-50-percent); }
     #conversejs .chatbox .sendXMPPMessage .send-button {
-      position: absolute;
+      position: static;
       left: var(--send-button-margin);
-      width: calc(100% - 2 * var(--send-button-margin));
+      width: 100%;
       background-color: var(--chat-head-color);
       color: var(--inverse-link-color);
       font-size: 80%;

sass/_chatbox.scss

@@ -278,9 +278,9 @@
             }
 
             .send-button {
-                position: absolute;
+                position: static;
                 left: var(--send-button-margin);
-                width: calc(100% - 2 * var(--send-button-margin));
+                width: 100%;
                 background-color: var(--chat-head-color);
                 color: var(--inverse-link-color);
                 font-size: 80%;