Changed time.localtime to return proper date

time.localtme would always return current date. This resulted in odd
behaviour when using datetime.datetime.fromtimestamp and
datetime.date.fromtimestamp
Web Groups Styles
Update readme
Huge set of changes in core Brython scripts : new names and namespaces management
Minor changes in standard library
Update tests
Update tests (most changes related to interaction with Javascript libraries)
Update documentation, but many other updates wanted
Change version number to 3.0.0
Replace Lib/dis.py by libs/dis.js + remove traces
change search order of immport functions
merge py_import/ added functions to allow python import Hooks
Fixes bug with lambdas inside functions
Fix bug in js_objects.js
Update documentation : new interface with Javascript objects and libraries
Merge pull request #20 from juancarlospaco/feature/site-groups

[Web] Groups Styles
Merge pull request #34 from Darkade/feature/time.js

Changed time.localtime to return proper date
Merge pull request #35 from juancarlospaco/feature/update-readme

[readme.md] Update readme
Add autocompletion to editor (copied from brython-in-the-classroom version by Kiko Correoso)
Add new HTML tags (by Kiko Correoso)