Did some jquery flot performance tuning, added text size cache that reduced render times by 25% (for single serie graphs)

public/vendor/jquery/jquery.flot.js

@@ -122,6 +122,7 @@ Licensed under the MIT license.
 		// re-calculating them when the plot is re-rendered in a loop.
 
 		this._textCache = {};
+		this._textSizeCache = window.flotTextSizeCache = window.flotTextSizeCache || {};
 	}
 
 	// Resizes the canvas to the given dimensions.
@@ -368,12 +369,17 @@ Licensed under the MIT license.
 				element.addClass(font);
 			}
 
-			info = styleCache[text] = {
-				width: element.outerWidth(true),
-				height: element.outerHeight(true),
-				element: element,
-				positions: []
-			};
+      info = styleCache[text] = { element: element, positions: [] };
+
+      var size = null;// this._textSizeCache[text];
+			if (size) {
+        info.width = size.width;
+        info.height = size.height;
+			} else {
+        info.width = element.outerWidth(true);
+        info.height = element.outerHeight(true);
+        this._textSizeCache[text] = { width: info.width, height: info.height };
+			}
 
 			element.detach();
 		}
@@ -1416,8 +1422,7 @@ Licensed under the MIT license.
 
                 var info = surface.getTextInfo(layer, t.label, font, null, maxWidth);
 
-                /// Grafana fix, add +1 to label width
-                labelWidth = Math.max(labelWidth, info.width + 1);
+                labelWidth = Math.max(labelWidth, info.width);
                 labelHeight = Math.max(labelHeight, info.height);
             }
 
@@ -1729,8 +1734,6 @@ Licensed under the MIT license.
             axis.delta = delta;
             axis.tickDecimals = Math.max(0, maxDec != null ? maxDec : dec);
             axis.tickSize = opts.tickSize || size;
-            // grafana addition
-            axis.scaledDecimals = axis.tickDecimals - Math.floor(Math.log(axis.tickSize) / Math.LN10);
 
             // Time mode was moved to a plug-in in 0.8, and since so many people use it
             // we'll add an especially friendly reminder to make sure they included it.