Remember most recently opened script location.

Previously when running a script from a file you were always taken back
to your desktop directory. Now you will be taken to the location of your
most recently opened script.

interface/interface_en.ts

@@ -4,22 +4,22 @@
 <context>
     <name>Application</name>
     <message>
-        <location filename="src/Application.cpp" line="1380"/>
+        <location filename="src/Application.cpp" line="1381"/>
         <source>Export Voxels</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="src/Application.cpp" line="1381"/>
+        <location filename="src/Application.cpp" line="1382"/>
         <source>Sparse Voxel Octree Files (*.svo)</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="src/Application.cpp" line="3617"/>
+        <location filename="src/Application.cpp" line="3623"/>
         <source>Open Script</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="src/Application.cpp" line="3618"/>
+        <location filename="src/Application.cpp" line="3624"/>
         <source>JavaScript Files (*.js)</source>
         <translation type="unfinished"></translation>
     </message>

interface/src/Application.cpp

@@ -169,6 +169,7 @@ Application::Application(int& argc, char** argv, timeval &startup_time) :
         _bytesPerSecond(0),
         _recentMaxPackets(0),
         _resetRecentMaxPacketsSoon(true),
+        _previousScriptLocation(),
         _logger(new FileLogger(this))
 {
     // read the ApplicationInfo.ini file for Name/Version/Domain information
@@ -3610,12 +3611,20 @@ void Application::loadScript(const QString& scriptName) {
 }
 
 void Application::loadDialog() {
-    // shut down and stop any existing script
+    QString suggestedName;
-    QString desktopLocation = QStandardPaths::writableLocation(QStandardPaths::DesktopLocation);
+
-    QString suggestedName = desktopLocation.append("/script.js");
+    if (_previousScriptLocation.isEmpty()) {
+        QString desktopLocation = QStandardPaths::writableLocation(QStandardPaths::DesktopLocation);
+        suggestedName = desktopLocation.append("/script.js");
+    } else {
+        suggestedName = _previousScriptLocation;
+    }
 
     QString fileNameString = QFileDialog::getOpenFileName(_glWidget, tr("Open Script"), suggestedName, 
                                                           tr("JavaScript Files (*.js)"));
+    if (!fileNameString.isEmpty()) {
+        _previousScriptLocation = fileNameString;
+    }
     
     loadScript(fileNameString);
 }

interface/src/Application.h

@@ -483,6 +483,8 @@ private:
     ControllerScriptingInterface _controllerScriptingInterface;
     QPointer<LogDialog> _logDialog;
 
+    QString _previousScriptLocation;
+
     FileLogger* _logger;
 
     void checkVersion();