Fix ICO/DIC/ICDPH invoice rendering

Signed-off-by: Peter Hatina <peter@hatina.eu>

templates/invoice.tex

@@ -115,10 +115,10 @@ a2 += (len(a1)-len(a2))*[""]
 \multicolumn{2}{X|}{} & \multicolumn{2}{X}{} \\
     % ISSUER
     \multicolumn{2}{l|}{IČO: {{issuer.ico}}} &
-        \multicolumn{2}{l}{ {{if customer.icdph}}IČO: \hspace{0.3cm}{{customer.ico}}{{endif}} } \\
+        \multicolumn{2}{l}{ {{if customer.ico}}IČO: \hspace{0.3cm}{{customer.ico}}{{endif}} } \\
     % CUSTOMER
     \multicolumn{2}{l|}{DIČ: {{issuer.dic}}} &
-        \multicolumn{2}{l}{ {{if customer.icdph}}DIČ: \hspace{0.3cm}{{customer.dic}}{{endif}} } \\
+        \multicolumn{2}{l}{ {{if customer.dic}}DIČ: \hspace{0.3cm}{{customer.dic}}{{endif}} } \\
 {{if issuer.icdph or customer.icdph}}
     {{if issuer.icdph}}
     \multicolumn{2}{l|}{IČDPH: {{issuer.icdph}}} &