Conflicts:
	src/bookmark.py
	src/config.py
	src/connection.py
	src/core/commands.py
	src/core/core.py
	src/core/handlers.py
	src/windows/info_bar.py
	src/windows/muc.py
	src/windows/roster_win.py
	src/windows/text_win.py
	src/xhtml.py

Might fix some not-yet-seen bugs

(introduced by the automated default arguments of config.get)

- also fix that travis build

- we need to have more

Should work for any case (plugin, different section, etc)

Make the "default" parameter optional and thus move it to the end of
the command with the other optional parameters.

And change all the calls.

the Config object now also optionally takes a dict of default values
in its constructor.

- Add two new options: tmp_image_dir and extract_inline_images
- tmp_image_dir is $XDG_CACHE_HOME(usually ~/.cache)/poezio/images if unset
- Name the images from a SHA-1 of their data and their mimetype
- Output file:// links inside the message

Conflicts:
	src/core/handlers.py
	src/tabs/xmltab.py

plugin

this option determines if the non-autojoin bookmarks will
be opened on startup or not.

It is false by default.