Moved "/_staging_area/"

Moved the "_staging_area" folder to "/patchers/", since this way
objects are visible by Max.
Doc (o.symbolchange)
Deprecated (o.checkumenuitem)

Open "o.checkumenuitem.maxhelp" to know why
Moved (o.pattr~)

Moved to ~/patchers/o-msp/Routing/
Doc (o.emptymessagefilter)

Filters Max's empty messages
Doc (o.pattrlist)

"Bindto multiple pattr objects"

Note: also changed the name of o.polypattr to o_polypattr, to hide it
from the autocomplete search, since o.pattrlist is in essence a wrapper
for it
Insignificant changes

- o.f2i.maxref
- o.obj.maxproto
Doc (o.ramp)

Wrapper to quickly use "line" interpolate an input number stream
Insignificant changes

- o.f2i.maxref.xml
- o.pattrlist.maxhelp
Doc (removed box from references)

- removed the jbox common attributes link