Permission type missed in permission masks

Permission masks referred to 5 permission types, but only listed 4 of them.
Add message about htaccess when updating
Make note a list a sub item
Add htaccess note to the quick install guide
Move block to correct position
Merge pull request #8 from VSEphpbb/update-fixes

Add message about htaccess when installing/updating
Ascraeus : Removing duplicate words
Olympus : Removing duplicate words
Merge pull request #12 from phpbb-fr-com/olympus-duplicate-words

Olympus : Removing duplicate words
Merge branch 'master' into ascraeus
Merge pull request #11 from phpbb-fr-com/ascraeus-duplicate-words

Ascraeus : Removing duplicate words