Pid Tab changes

• removing watermark
• adjusting reset/show buttons

tabs/pid_tuning.css

@@ -338,7 +338,7 @@
 }
 
 .show {
-    width:110px; 
+    width:130px; 
     float:right; 
     margin-right:3px;
 }
@@ -407,21 +407,6 @@
     color: #7d7d7d;
     font-size: 11px;
 }
-    
-#content-watermark {
-    position: absolute;
-    bottom: 40px;
-    left: 0;
-    right: 0;
-    z-index: -1;
-    overflow: hidden;
-    background-image: url("../images/light-wide-1.svg");
-    background-repeat: no-repeat;
-    background-position: 95% 20%;
-    background-size: 430px;
-    height: 174px;
-    opacity: 0.15;
-}
 
 .tab-pid_tuning .resetbt {
     width: 140px; 

tabs/pid_tuning.html

@@ -1,11 +1,10 @@
-<div id="content-watermark"></div>
 <div class="tab-pid_tuning toolbar_fixed_bottom">
     <div class="content_wrapper">
         <div class="tab_title" i18n="tabPidTuning"></div>
         <div class="cf_doc_version_bt">
             <a id="button-documentation" href="https://github.com/betaflight/betaflight/releases" target="_blank"></a>
         </div>
-        <div class="cf_column half">
+        <div class="cf_column twothird">
             <div class="controller">
                 <span class="head" i18n="pidTuningControllerHead"></span> 
                 <select name="controller">
@@ -244,4 +243,4 @@
             <a class="refresh" href="#" i18n="pidTuningButtonRefresh"></a>
         </div>
     </div>
-</div>
+</div>