A CSS cheat to make the item-tools usable again

when opacity is set.
A bit less z-index
Merge pull request #430 from cvogeley/master

A CSS cheat to make the item-tools usable again
ability to unset a layout and subthread is probably close to working again.
Merge https://github.com/friendica/red into pending_merge
Merge pull request #429 from solstag/master

update pt-br translation
quickfix for #write-pages behind navbar
doc/strings update
A future "comanche UI" is going to need lists of available building blocks. Some of these are pretty easy to assemble, others are a bit more difficult and will have to go through a registration procedure. This checkin create such a registration procedure for page templates and their associated flavours and their assignable regions. The array itself is extensible since I don't know for sure at this stage what the front-end UI for this feature will ultimately require or even if there ever will be a front-end UI as this community still seems to believe that software writes itself and just magically appears, working perfectly.
missed the string update on an earlier checkin
Merge https://github.com/friendica/red into pending_merge
Set a default directory server from a hard-wired list if one was not previously chosen.
A useful hook
I'm not sure I care any more.
basic chatterbot support - though these would still require additional functionality in the API to maintain presence as they'll get kicked out of the room if they don't ping it regularly.
got the presence bit.
Unfortunate omission
work tree cleanup - found these which hadn't been committed.
assets update
minor revision