Bug #635552: Rename "Financial Calculator" into "Loan Repayment Calculator"

I've been told (by users who know the subject well enough) the "Financial
Calculator" should rather be called a "Loan Repayment Calculator" or a
"Mortgage Payment Calculator", as this is what is being offered there. So
I finally made this renaming.

git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@20268 57a11ea4-9604-0410-9ed3-97b8803252fd

src/gnome/glade/fincalc.glade

@@ -4,7 +4,7 @@
   <!-- interface-naming-policy toplevel-contextual -->
   <widget class="GtkDialog" id="Financial Calculator Dialog">
     <property name="border_width">6</property>
-    <property name="title" translatable="yes">Financial Calculator</property>
+    <property name="title" translatable="yes">Loan Repayment Calculator</property>
     <property name="resizable">False</property>
     <property name="type_hint">normal</property>
     <property name="has_separator">False</property>

src/gnome/gnc-plugin-basic-commands.c

@@ -180,8 +180,8 @@ static GtkActionEntry gnc_plugin_actions [] =
         G_CALLBACK (gnc_main_window_cmd_tools_commodity_editor)
     },
     {
-        "ToolsFinancialCalculatorAction", NULL, N_("_Financial Calculator"), NULL,
-        N_("Use the financial calculator"),
+        "ToolsFinancialCalculatorAction", NULL, N_("_Loan Repayment Calculator"), NULL,
+        N_("Use the loan/mortgage repayment calculator"),
         G_CALLBACK (gnc_main_window_cmd_tools_financial_calculator)
     },
     {