Comment/Uncomment commands now work in django templates

[scuml]

Comment/Uncomment command and hotkeys now work in django templates.

Before the comment key would place invalid comment syntax around text...

{# line 1
line 2 #}

Now the comment command detects if one or multiple lines are selected and intelligently chooses the best comment style:

{# line 1 #} 

{% comment %}
line 1
line 2
{% endcomment %}

Resolves #10

[scuml]

@squ1b3r How does this look?

[squ1b3r]

@scuml I haven't looked through it fully yet. Still need to finish reviewing that Python code. I'll try an find some time later this week.