Template improvements

templates/tex/macros.tex

 {%- macro requirement_filter(text) -%}{{ text.replace('<', '$<$').replace('>', '$>$').replace('_', '\\_') }}
 {%- endmacro -%}
-{%- macro latex_filter(text) -%}{{ requirement_filter(text.replace('"', '\'')).replace('/xc2/xb0', '$^\circ$').replace('/', '/\\allowbreak ').replace('&', '\\allowbreak \\&').replace('->', '$\\rightarrow$').replace('<-', '$\\leftarrow$').replace('=>', '$\\Rightarrow$').replace('<=', '$\\leq$').replace('>=', '$\\geq$').replace('{', '\{').replace('}', '\}').replace('#', '\\#')}}
+{%- macro latex_filter(text) -%}{{ text.replace('\\', '/').replace('%', '\\%').replace('/xc2/xb0', '$^\circ$').replace('"', '\'').replace('/', '/\\allowbreak ').replace('&', '\\allowbreak \\&').replace('_', '\\_').replace('->', '$\\rightarrow$').replace('<-', '$\\leftarrow$').replace('=>', '$\\Rightarrow$').replace('<=', '$\\leq$').replace('>=', '$\\geq$').replace('<', '$<$').replace('>', '$>$').replace('{', '\{').replace('}', '\}').replace('#', '\\#')}}
 {%- endmacro -%}
 
 {%- macro color_by_level(level) -%}{% if level <= 10 %}black{% else %}{% if level <= 20 %}green{% else %}{% if level <= 30 %}orange{% else %}red{% endif %}{% endif %}{% endif %}

templates/tex/requirement_specification.tex

 		{%- if item.system_type_uid == '_4-K5EHYYEem_kd-7nxt1sg' %}
 			\section{ {{macros.latex_filter(item.Heading)}} }
 		{%- elif item.system_type_uid == '_MR7eNHYYEem_kd-7nxt1sg' %}
-			\subsection{\xspace{}{{ item.ID }}: {{ item.Heading }} }
+			\subsection{\xspace{}{{ item.ID }}: {{ macros.latex_filter(item.Heading) }} }
 			{%- if 'Description' in item and item.Description != '' %}
 				{{ item.Description }}
 			 	{%- if 'ReasonForImplementation' in item and item.ReasonForImplementation != '' or 'Fitcriterion' in item and item.Fitcriterion != ''%}