Provides two new styles:
1. An "In Premable" style that puts whatever is entered into it into the preamble.
This can be used, if one wishes, to include preamble code in the body of the
LyX document.
2. An "In Title" style that will put its contents into the body of the LaTeX
document, but before \maketitle is issued. This is useful for making branches
and notes in title-related material. (If you put these in a Standard layout,
this signals to LyX to output \maketitle, which may then come too early.)
The ForceLocal machinery allows the module to be added to stable.
(cherry picked from commit a9af5333b2)
