New service to create and render template with Jinja

Allows us to include Jinja templates within Jinja templates

crc/services/jinja_service.py

@@ -0,0 +1,39 @@
+from jinja2 import Environment, DictLoader
+
+
+class JinjaService:
+    """Service for Jinja2 templates.
+
+Includes the ability to embed templates inside templates, using task.data.
+
+-- In task.data
+name = "Dan"
+my_template = "Hi {{name}}, This is a jinja template too!"
+
+-- In Element Documentation
+Please Introduce yourself.
+{% include 'my_template' %}
+Cool Right?
+
+-- Produces
+Please Introduce yourself.
+Hi Dan, This is a jinja template too!
+Cool Right?
+"""
+
+    @staticmethod
+    def get_content(input_template, data):
+        templates = data
+        templates['main_template'] = input_template
+        jinja2_env = Environment(loader=DictLoader(templates))
+
+        try:
+            template = jinja2_env.get_template('main_template')
+
+        except Exception:
+            # TODO: Should we deal w/ specific exceptions here?
+            # i.e., the ones in workflow_service._process_documentation
+            raise
+
+        else:
+            return template.render(**data)