Add 400 error page

HTML copied from the 404 page, but I remove the `text-center` on the
error message because it doesn't look good. Took a multiline message for
me to realise it.

1 files changed, 4 insertions, 0 deletions

diff --git a/license-generator/src/response.rs b/license-generator/src/response.rs
index cf91e4e..6809988 100644
--- a/license-generator/src/response.rs
+++ b/license-generator/src/response.rs
@@ -2,6 +2,10 @@ use std::io::Write;
 
 use errors::*;
 
+pub fn set_400<W: Write>(w: &mut W) -> Result<()> {
+    Ok(writeln!(w, "Status: 400")?)
+}
+
 pub fn set_403<W: Write>(w: &mut W) -> Result<()> {
     Ok(writeln!(w, "Status: 403")?)
 }