-refactoring js files,

-implementing 3 decimal observer
-reusing load steps and save steps event
-adding settings for xyzSteps
-subsection macro default spacing = true

octoprint_CalibrationTools/templates/tabs/tab-pid.jinja2

@@ -48,7 +48,7 @@
     </div>
 </div>
 
-{{ snipped.subSection("Hot-end tuning", true) }}
+{{ snipped.subSection("Hot-end tuning") }}
 <div class="row-fluid">
     <div class="span5">
         <label for="fanSpeed" class="pull-right" style="margin-top: 5px;" title="Fan speed">
@@ -95,7 +95,7 @@
     </div>
 </div>
 
-{{ snipped.subSection("Heated bed tuning", true) }}
+{{ snipped.subSection("Heated bed tuning") }}
 <div class="row-fluid">
     <div class="span5">
         <label for="fanSpeed" class="pull-right" style="margin-top: 5px;" title="Fan speed">
@@ -142,7 +142,7 @@
     </div>
 </div>
 
-{{ snipped.subSection("Note", true) }}
+{{ snipped.subSection("Note") }}
 {{ snipped.quote("It is recommended to run the tuning with conditions as close to printing as possible. This means filament loaded and the part cooling fan set to your normal speed. It is not essential, but you may
 prefer to start this process with the hot end at room temperature.",
 "<a href='https://teachingtechyt.github.io/calibration.html#pid' target='_blank'>teachingtechyt.github.io</a>", "text-warning") }}