add type="button" (#366)

Author: KazuyaHara

src/js/templates.js

@@ -12,7 +12,7 @@ this["MediumInsert"]["Templates"]["src/js/templates/core-buttons.hbs"] = Handleb
 },"compiler":[7,">= 4.0.0"],"main":function(container,depth0,helpers,partials,data) {
     var stack1;
 
-  return "<div class=\"medium-insert-buttons\" contenteditable=\"false\" style=\"display: none\">\n    <button class=\"medium-insert-buttons-show\"><span>+</span></button>\n    <ul class=\"medium-insert-buttons-addons\" style=\"display: none\">\n"
+  return "<div class=\"medium-insert-buttons\" contenteditable=\"false\" style=\"display: none\">\n    <button type=\"button\" class=\"medium-insert-buttons-show\"><span>+</span></button>\n    <ul class=\"medium-insert-buttons-addons\" style=\"display: none\">\n"
     + ((stack1 = helpers.each.call(depth0 != null ? depth0 : {},(depth0 != null ? depth0.addons : depth0),{"name":"each","hash":{},"fn":container.program(1, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "    </ul>\n</div>\n";
 },"useData":true});
@@ -126,4 +126,4 @@ this["MediumInsert"]["Templates"]["src/js/templates/images-toolbar.hbs"] = Handl
     + ((stack1 = helpers.each.call(alias1,(depth0 != null ? depth0.styles : depth0),{"name":"each","hash":{},"fn":container.program(1, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "    </ul>\n</div>\n\n"
     + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.actions : depth0),{"name":"if","hash":{},"fn":container.program(4, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "");
-},"useData":true});
+},"useData":true});

src/js/templates/core-buttons.hbs

@@ -1,5 +1,5 @@
 <div class="medium-insert-buttons" contenteditable="false" style="display: none">
-    <button class="medium-insert-buttons-show"><span>+</span></button>
+    <button class="medium-insert-buttons-show" type="button"><span>+</span></button>
     <ul class="medium-insert-buttons-addons" style="display: none">
         {{#each addons}}
             <li><button data-addon="{{@key}}" data-action="add" class="medium-insert-action">{{{label}}}</button></li>