[nvd3] fix bubble axis (#3332)

number of issues are addressed here:
* x axis formatting doesn't apply in bubble chart
* adding option to show/hide bounds of x and y axis
* with a flaky 'auto' margin mode, allow user to specify hard values or
  auto
* x label font-size was different than y axis
* show more options and reorg Control panels for Axes in `line` viz

superset/assets/javascripts/explore/stores/controls.jsx

@@ -94,6 +94,7 @@ export const controls = {
   y_axis_bounds: {
     type: 'BoundsControl',
     label: 'Y Axis Bounds',
+    renderTrigger: true,
     default: [null, null],
     description: (
       'Bounds for the Y axis. When left empty, the bounds are ' +
@@ -414,7 +415,18 @@ export const controls = {
     label: 'Bottom Margin',
     choices: formatSelectOptions(['auto', 50, 75, 100, 125, 150, 200]),
     default: 'auto',
-    description: 'Bottom marging, in pixels, allowing for more room for axis labels',
+    renderTrigger: true,
+    description: 'Bottom margin, in pixels, allowing for more room for axis labels',
+  },
+
+  left_margin: {
+    type: 'SelectControl',
+    freeForm: true,
+    label: 'Left Margin',
+    choices: formatSelectOptions(['auto', 50, 75, 100, 125, 150, 200]),
+    default: 'auto',
+    renderTrigger: true,
+    description: 'Left margin, in pixels, allowing for more room for axis labels',
   },
 
   granularity: {
@@ -1005,6 +1017,14 @@ export const controls = {
     description: 'Whether to display the min and max values of the X axis',
   },
 
+  y_axis_showminmax: {
+    type: 'CheckboxControl',
+    label: 'Y bounds',
+    renderTrigger: true,
+    default: true,
+    description: 'Whether to display the min and max values of the Y axis',
+  },
+
   rich_tooltip: {
     type: 'CheckboxControl',
     label: 'Rich Tooltip',