Improve customization options

[jorgepiloto]

It is difficult to provide all possible customization options for a template, as every project is unique. However, the could improve the current ones by introducing:

• The ability to choose the paper size (A4, A5...). The margins should be adapted to the new size.
• Select the language of the document.
• Ask if the list of figures and the one for tables are desired to be included.