[doc] Rework a bit request tutorial

- Add the input scene
- correct the telnet example
- fix some typo
- add an example using pymorse
- cleanup a bit the manual socket example
[tools] Mostly rewrite simple_example.py so it looks like python

It include correct indentation, removal of global, removal of useless
import, and clean the code so it works for 1.0

Other tools in this directory needs to be cleaned too, and maybe pass to
pymorse.
[doc] Improve a bit human documentation

- fix some reference
- fix the pocolibs example
- fix a few spelling issue
- replace occurence of 0.6 by 1.0
[builder] Remove some unnecessary imports for human
[doc] Fix the pymorse example

Fix #269