- Extended tlvfile to include CAPF, SRST and TVS

- Update the tlvfile help text
  - Update TLV Handling. Update index.php error output when no filename is provided. Update gitignore
- Use readfile
- Add .cache folder

Signed-off-by: Diederik de Groot <ddegroot@talon.nl>

.gitignore

@@ -2,6 +2,14 @@
 env/
 *~
 *.bak
+*.enc
+*.sgn
+.requirements_satisfied
 etc/nginx/site-available/nginx.rules
 etc/tftpd-hpa/tftpd.rules
-.requirements_satisfied
+etc/certs/*.pem
+tftpboot/settings/*.cnf.xml
+tftpboot/settings/*.tlv
+tftpboot/settings/authorized_keys
+tftpboot/settings/*.jar
+tftpboot/settings/*.json