Move timeline-controls into table container

app/assets/stylesheets/content/work_packages/timelines/_timelines.sass

@@ -4,7 +4,7 @@
 
 .wp-timeline--dummy-controls
   position: absolute
-  right: 5px
+  right: 20px
   background: white
   top: calc(#{$generic-table--header-height} + 10px)
   z-index: 101

frontend/app/components/wp-table/wp-table.directive.html

@@ -3,6 +3,7 @@
 
   <div class="generic-table--results-container"
        wp-virtual-scroll-table>
+    <timeline-control></timeline-control>
     <table interactive-table class="keyboard-accessible-list generic-table work-package-table">
       <colgroup>
         <col highlight-col />
@@ -46,7 +47,6 @@
               <div class="wp-timeline--slider"></div>
             </div>
             <div class="wp-timeline-header-container generic-table--sort-header-outer">
-              <timeline-control></timeline-control>
               <div class="wp-timeline--scroll-wrapper">
                 <span class="generic-table--sort-header wp-timeline-header">
                 </span>