MSavage latex template

[PJBrs]

This PR contains patches that:

• Fix output that doesn't work with recent changes in the MSavage dndtemplate style
• Improve latex output for the MSavage latex template
• Use space on the MSavage latex template more efficiently
• Remove certain info if unused

I've compiled all examples with these patches.

These patches only touch code used for the MSavage latex template.

[PJBrs]

... made one very small last change:

diff --git a/dungeonsheets/character.py b/dungeonsheets/character.py
index c448e2f..7965636 100644
--- a/dungeonsheets/character.py
+++ b/dungeonsheets/character.py
@@ -771,7 +771,7 @@ class Character(Creature):
         if hasattr(self, "features_and_traits"):
             info_list = []
             N = 30
-            if not self.features_and_traits == "":
+            if re.search(r'\S',  self.features_and_traits):
                 info_list = ["**Other Features**"]
                 info_list += [
                     text.strip()

Does not change output.

[PJBrs]

... I added four more patches to:

1. Implement the halfcaster sheet that was recently added in Mat Savage's latex template.
2. Add pdfbookmarks to character sheet, the spellcasting sheet and the backstory sheet.
3. Use the string "proficiencies_text" in a character module for "Other proficiencies" in the MSavage latex template; it now uses the variable "chosen_tools", but this is not documented, and "proficiencies_text" basically does the same thing
4. Remove "Unarmed" from the list of weapon proficiencies, just like it is in the fillable pdf form.

[PJBrs]

Removed one patch that wasn't good enough yet :-(