replace render_to_response with render

Replaced the render_to_response shortcut with render everywhere because
newer django code tends not to use render_to_response at all. Also
updated text where it refered to render_to_response arguments and the
use of RequestContext with render.
fix underline too long
Update chapter01.rst

The resource moved from http://www.diveintopython.org/ to http://www.diveintopython.net/
Merge pull request #8 from chrisco/patch-1

Update the link to Dive into Python.
Merge pull request #7 from RaphaelKimmig/master

Replaced render_to_response with render
Merge pull request #9 from lgp171188/master

Removed all references to "trunk"; updated Django to 1.4.2 and Python to 2.7
Update Django version number in Chpt 1.  We will eventually completely update the book to version 1.4
Remove whitespace at end of lines, wrap lines at 80 characters.
Update note about python 3.0 to say that Django 1.5 will support it.  No longer encourage new python developers to ignore 3.0.
Update example to reference python 2.7, not 2.4
Update another 2.4=>2.7.  Remove sentence that does not make sense with git; revision numbers no longer increase monotomically like they did with SVN.
Remove references to "trunk" and replace them with "development version" as started by Guruprasad
Django is now at 1.4.2
This paragraph sounded like it was still talking about SVN, so I used the term "commit" instead of "changeset".  Also, new developers may not know what it means to "find your HEAD commit," so I modified the sentence to be more clear.
Recommend python 2.7
Django now only works with Python 2.5+, so no need to specify that they must use 2.5 to use SQLite.
Again, Django does not support python 2.4, so we can assume users are using python 2.5 or higher
Add a note that 5.0.1 of the oracle driver is ok (https://docs.djangoproject.com/en/1.4/ref/databases/)
Five files; cannot forget manage.py
More updates to django 1.4.2