- changed some status bar messages

- New feature: added the capability to view the source code of the Gerber/Excellon file that was loaded into the app. The file is also stored as an object attribute for later use. THe view option is in the project context menu and in Menu -> Options -> View Source

FlatCAMObj.py

@@ -422,6 +422,9 @@ class FlatCAMGerber(FlatCAMObj, Gerber):
 
         self.apertures_row = 0
 
+        # store the source file here
+        self.source_file = ""
+
         # assert isinstance(self.ui, GerberObjectUI)
         # self.ui.plot_cb.stateChanged.connect(self.on_plot_cb_click)
         # self.ui.solid_cb.stateChanged.connect(self.on_solid_cb_click)
@@ -1092,6 +1095,9 @@ class FlatCAMExcellon(FlatCAMObj, Excellon):
         # variable to store the distance travelled
         self.travel_distance = 0.0
 
+        # store the source file here
+        self.source_file = ""
+
         self.multigeo = False
 
     @staticmethod
@@ -4809,7 +4815,7 @@ class FlatCAMCNCjob(FlatCAMObj, CNCjob):
 
     def on_modifygcode_button_click(self, *args):
         # add the tab if it was closed
-        self.app.ui.plot_tab_area.addTab(self.app.ui.cncjob_tab, "CNC Code Editor")
+        self.app.ui.plot_tab_area.addTab(self.app.ui.cncjob_tab, "Code Editor")
 
         # delete the absolute and relative position and messages in the infobar
         self.app.ui.position_label.setText("")
@@ -4821,7 +4827,7 @@ class FlatCAMCNCjob(FlatCAMObj, CNCjob):
         preamble = str(self.ui.prepend_text.get_value())
         postamble = str(self.ui.append_text.get_value())
         self.app.gcode_edited = self.export_gcode(preamble=preamble, postamble=postamble, to_file=True)
-        # print(self.app.gcode_edited)
+
         # first clear previous text in text editor (if any)
         self.app.ui.code_editor.clear()