Remove port/ directory

[humitos]

There is a directory called port/ inside the repository and it seems to be an abstraction of the sugar-toolkit to keep it compatible with old versions of Sugar.

After starting the port to Gtk3 I found some issues related with that "port" directory and we discussed about it and we decided to remove that compatibility with old versions of Sugar.

•  http://wiki.sugarlabs.org/go/Development_Team/sugar-port
•  http://people.sugarlabs.org/~alsroot/sugar-port/

[humitos]

There are some methods missing here: "read_file" and "write_file" on the Activity main class. We should take a look at this

[humitos]

Check if something is saved in the Journal in the gtk2 version

[humitos]

Done here:

•  http://git.sugarlabs.org/infoslicer/mainline/commit/6ea76d7716a86122f8bd02b3d9bd30ed7fc94b17