Revert "no longer need to tweak mathjax config in texToSVG"

This reverts commit 721d634.

Author: archmoj

src/lib/svg_text_utils.js

@@ -153,16 +153,27 @@ function cleanEscapesForTex(s) {
 
 function texToSVG(_texString, _config, _callback) {
     var originalRenderer,
+        originalConfig,
         originalProcessSectionDelay,
         tmpDiv;
 
     MathJax.Hub.Queue(
     function() {
+        originalConfig = Lib.extendDeepAll({}, MathJax.Hub.config);
+
         originalProcessSectionDelay = MathJax.Hub.processSectionDelay;
         if(MathJax.Hub.processSectionDelay !== undefined) {
             // MathJax 2.5+
             MathJax.Hub.processSectionDelay = 0;
         }
+
+        return MathJax.Hub.Config({
+            messageStyle: 'none',
+            tex2jax: {
+                inlineMath: [['$', '$'], ['\\(', '\\)']]
+            },
+            displayAlign: 'left',
+        });
     },
     function() {
         // Get original renderer
@@ -202,6 +213,7 @@ function texToSVG(_texString, _config, _callback) {
         if(originalProcessSectionDelay !== undefined) {
             MathJax.Hub.processSectionDelay = originalProcessSectionDelay;
         }
+        return MathJax.Hub.Config(originalConfig);
     });
 }