add evil merge to glossary

Signed-off-by: Mattias Andrée <maandree@operamail.com>
add fast-forward to glossary

Signed-off-by: Mattias Andrée <maandree@operamail.com>
add fetch to glossary

Signed-off-by: Mattias Andrée <maandree@operamail.com>
add gitfile to glossary

Signed-off-by: Mattias Andrée <maandree@operamail.com>
m

Signed-off-by: Mattias Andrée <maandree@operamail.com>
add head ref to glossary

Signed-off-by: Mattias Andrée <maandree@operamail.com>
add head to glossary

Signed-off-by: Mattias Andrée <maandree@operamail.com>
add HEAD to glossary

Signed-off-by: Mattias Andrée <maandree@operamail.com>