Add indents and probaly more colors to Smali Editor/Document

```
Right now all lines are left aligned and it is hard to distinguish where a 
method starts or ends. Indentations and background colors on some lines with 
special keywords (eg, .method) would help.

```

Original issue reported on code.google.com by `jhnns.hf...@gmail.com` on 26 Sep 2013 at 3:10
