- fixed bug in Gerber Editor in which the units conversion wasn't calculated correct

- fixed bug in Gerber Editor in which the QThread that is started on object edit was not stopped at clean up stage
- fixed bug in Gerber Editor that kept all the apertures (including the geometry) of a previously edited object that was not saved after edit

locale/de/LC_MESSAGES/strings.po

@@ -16793,7 +16793,7 @@ msgid "Excellon merging is in progress. Please wait..."
 msgstr "Das Zusammenführen von Excellons ist im Gange. Warten Sie mal..."
 
 #: flatcamTools/ToolPcbWizard.py:474
-msgid "The imported Excellon file is None."
+msgid "The imported Excellon file is empty."
 msgstr "Die importierte Excellon-Datei ist Keine."
 
 #: flatcamTools/ToolProperties.py:131

locale/en/LC_MESSAGES/strings.po

@@ -16456,8 +16456,8 @@ msgid "Excellon merging is in progress. Please wait..."
 msgstr "Excellon merging is in progress. Please wait..."
 
 #: flatcamTools/ToolPcbWizard.py:474
-msgid "The imported Excellon file is None."
-msgstr "The imported Excellon file is None."
+msgid "The imported Excellon file is empty."
+msgstr "The imported Excellon file is empty."
 
 #: flatcamTools/ToolProperties.py:131
 msgid "Object Properties are displayed."

locale/es/LC_MESSAGES/strings.po

@@ -16717,7 +16717,7 @@ msgid "Excellon merging is in progress. Please wait..."
 msgstr "La fusión de Excellon está en progreso. Por favor espera..."
 
 #: flatcamTools/ToolPcbWizard.py:474
-msgid "The imported Excellon file is None."
+msgid "The imported Excellon file is empty."
 msgstr "El archivo Excellon importado es Ninguno."
 
 #: flatcamTools/ToolProperties.py:131

locale/fr/LC_MESSAGES/strings.po

@@ -16716,7 +16716,7 @@ msgid "Excellon merging is in progress. Please wait..."
 msgstr "Excellon fusion est en cours. S'il vous plaît, attendez..."
 
 #: flatcamTools/ToolPcbWizard.py:474
-msgid "The imported Excellon file is None."
+msgid "The imported Excellon file is empty."
 msgstr "Le fichier Excellon importé est Aucun."
 
 #: flatcamTools/ToolProperties.py:131

locale/hu/LC_MESSAGES/strings.po

@@ -16458,8 +16458,8 @@ msgid "Excellon merging is in progress. Please wait..."
 msgstr "Excellon merging is in progress. Please wait..."
 
 #: flatcamTools/ToolPcbWizard.py:474
-msgid "The imported Excellon file is None."
-msgstr "The imported Excellon file is None."
+msgid "The imported Excellon file is empty."
+msgstr "The imported Excellon file is empty."
 
 #: flatcamTools/ToolProperties.py:131
 msgid "Object Properties are displayed."

locale/it/LC_MESSAGES/strings.po

@@ -13789,7 +13789,7 @@ msgid "Excellon merging is in progress. Please wait..."
 msgstr ""
 
 #: flatcamTools/ToolPcbWizard.py:478
-msgid "The imported Excellon file is None."
+msgid "The imported Excellon file is empty."
 msgstr ""
 
 #: flatcamTools/ToolProperties.py:119

locale/pt_BR/LC_MESSAGES/strings.po

@@ -16521,7 +16521,7 @@ msgid "Excellon merging is in progress. Please wait..."
 msgstr "A união Excellon está em andamento. Por favor, espere..."
 
 #: flatcamTools/ToolPcbWizard.py:474
-msgid "The imported Excellon file is None."
+msgid "The imported Excellon file is empty."
 msgstr "O arquivo Excellon importado está Vazio."
 
 #: flatcamTools/ToolProperties.py:131

locale/ro/LC_MESSAGES/strings.po

@@ -16728,7 +16728,7 @@ msgid "Excellon merging is in progress. Please wait..."
 msgstr "Fuziunea fisiere Excellon este in curs. Vă rugăm aşteptați ..."
 
 #: flatcamTools/ToolPcbWizard.py:474
-msgid "The imported Excellon file is None."
+msgid "The imported Excellon file is empty."
 msgstr "Fişierul Excellon importat este gol."
 
 #: flatcamTools/ToolProperties.py:131

locale/ru/LC_MESSAGES/strings.po

@@ -16579,7 +16579,7 @@ msgid "Excellon merging is in progress. Please wait..."
 msgstr "Слияние Excellon продолжается. Пожалуйста, подождите..."
 
 #: flatcamTools/ToolPcbWizard.py:474
-msgid "The imported Excellon file is None."
+msgid "The imported Excellon file is empty."
 msgstr "Импортированный файл Excellon есть None."
 
 #: flatcamTools/ToolProperties.py:131