Added:
- customisable message for phead error
- added recently added to features tags by default
- changed some default messages
- changed around default permissions so it's easier to use HDB when OP
- changed default head for plants to represent plants more

Fixed:
- OP users not being able to grab heads if economy is disabled
- naming inconsistency when grabbing heads from database and picking up
- space between prefix and noHeadsFound and beMoreSpecific
- long delay for when searching and nothing is found
- when you need to be more specific it still showed all the heads