fix #155, Project not focused after loading

src/ce_lcldragdrop.pas

@@ -150,6 +150,7 @@ begin
     else
       TCEDubProject.create(nil);
     fProj.loadFromFile(fname);
+    fProj.activate;
   end
   else getMultiDocHandler.openDocument(fname);
 end;

src/ce_libmaneditor.pas

@@ -634,6 +634,7 @@ begin
     else
       TCEDubProject.create(nil);
     fProj.loadFromFile(fname);
+    fProj.activate;
   end
   else dlgOkInfo('the project file for this library seems to be invalid');
 end;

src/ce_main.pas

@@ -3382,6 +3382,7 @@ begin
 
   fProject.loadFromFile(fname);
   showProjTitle;
+  fProject.activate;
 end;
 
 procedure TCEMainForm.mruProjItemClick(Sender: TObject);

src/ce_miniexplorer.pas

@@ -497,6 +497,7 @@ begin
     else
       TCEDubProject.create(nil);
     fProj.loadFromFile(fname);
+    fProj.activate;
   end
   else getMultiDocHandler.openDocument(fname);
 end;