- fix app crash for the case that there are no translation files

- fixed some forgotten strings to be prepared for internationalization in ToolCalculators
- fixed Tools menu no longer working due of changes
- added some test translation for the ToolCalculators (in Romanian)
- fixed bug in ToolCutOut where for each tool invocation the signals were reconnected

FlatCAMApp.py

@@ -59,10 +59,13 @@ import tclCommands
 
 # from ParseFont import *
 
-from gettext import *
+import gettext
 import FlatCAMTranslation as fcTranslate
-fcTranslate.apply_language('FlatCAMApp')
 
+fcTranslate.apply_language('FlatCAMApp')
+import builtins
+if '_' not in builtins.__dict__:
+    _ = gettext.gettext
 
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 ##                App                 ##