Description:
When I am testing LO 7.4 RC1 in Spanish, I find some untranslated strings in Spanish under the following path in the Form menu of LO Writer 7.4 RC1 in Spanish: 

-->Form Menu ("Formulario" in Spanish) --> “Content Controls” Submenu ("Controles de Contenido" in Spanish). 


Steps to Reproduce:
1. Open LO Writer 7.4 RC1 in Spanish.
2. Explore the “Form” Menu ("Formulario" in Spanish).
3. Click on  the “Content Controls” submenu ("Controles de Contenido” in Spanish).
4. Find the following strings:
   "Insert Picture Content Control"
   "Insert Drop-Down List Content Control"
   “Insert Date Content Control”


Actual Results:
Those strings are displayed in English but not in Spanish as they should be displayed: 
          "Insert Picture Content Control"
          "Insert Drop-Down List Content Control"
          “Insert Date Content Control”


Expected Results:
Translate the strings mentioned above to the Spanish language.

Put "Insertar Control de Contenido Imagen" instead of "Insert Picture Content Control".
Put "Insertar Control de Contenido Lista Desplegable" instead of "Insert Drop-Down List Content Control".
Put "Insertar Control de Contenido Fecha" instead of “Insert Date Content Control”.


Reproducible: Always


User Profile Reset: Yes



Additional Info:
[Information automatically included from LibreOffice]
Locale: es
Module: TextDocument
[Information guessed from browser]
OS: Windows (All)
OS is 64bit: no