Don't skip over the first Tera error.

The first line in the Tera error messages is sometimes less useful,
but in other cases, like when the context is not a map or struct,
contains the complete description. As such, always include it, even if
the output is slightly uglier. Also don't append periods at the end
since some Tera messages already have them.

contrib/src/templates/tera_templates.rs

@@ -41,8 +41,8 @@ impl Engine for Tera {
             Ok(string) => Some(string),
             Err(e) => {
                 error_!("Error rendering Tera template '{}'.", name);
-                for error in e.iter().skip(1) {
-                    error_!("{}.", error);
+                for error in e.iter() {
+                    error_!("{}", error);
                 }
 
                 None