- working on Isolation Tool: made to work the tool parameters data to GUI and GUI to data

- Isolation Tool: reworked the GUI
- if there is a Gerber object selected then in Isolation Tool the Gerber object combobox will show that object name as current

defaults.py

@@ -177,7 +177,7 @@ class FlatCAMDefaults:
         "gerber_isooverlap": 10,
         "gerber_milling_type": "cl",
         "gerber_combine_passes": False,
-        "gerber_iso_scope": 'all',
+        "gerber_iso_scope": _("All"),
         "gerber_noncoppermargin": 0.1,
         "gerber_noncopperrounded": False,
         "gerber_bboxmargin": 0.1,
@@ -188,7 +188,7 @@ class FlatCAMDefaults:
         "gerber_aperture_scale_factor": 1.0,
         "gerber_aperture_buffer_factor": 0.0,
         "gerber_follow": False,
-        "gerber_tool_type": 'circular',
+        "gerber_tool_type": 'C1',
         "gerber_vtipdia": 0.1,
         "gerber_vtipangle": 30,
         "gerber_vcutz": -0.05,