Make NSIS and Win build scripts remove " character

It is not strictly necessary in the Python version because it's being
appended to a batch command, but in order to have things make sense if
the mechanism of dispatching commands changes the program will strip
double quotes.

build_scripts/win/common.py

@@ -12,7 +12,7 @@ def get_version_string():
     dir_path = os.path.dirname(os.path.realpath(__file__))
     with open(dir_path + "/../compile_version_string.txt", "r") as file:
         contents = file.readline()
-        return contents
+        return contents.strip('"')
 
 
 #Const globals

installer/installer.nsi

@@ -11,7 +11,8 @@
 		!define THIRDDIR "..\third-party"
         !define PACKAGEDIR "..\src\package_files"
         !define PROJECTDIR "..\"
-        !define /file VERSION_STRING "..\build_scripts\compile_version_string.txt"
+        !define /file VERSION_STRING_QUOTES "..\build_scripts\compile_version_string.txt"
+        !searchreplace VERSION_STRING ${VERSION_STRING_QUOTES} "$\"" ""
 
         
     ;Installer icon