pgAdmin III commit: Fix various doc formating issues related to the TOC

Fix various doc formating issues related to the TOCs. Re-add missing
XML and XSL samples.

Branch
------
master

Details
-------
http://git.postgresql.org/gitweb?p=pgadmin3.git;a=commitdiff;h=f6ec8cb4a94f4e9679ff0e041614c29986357fdf
Author: Akshay Joshi <akshay.joshi@enterprisedb.com>

Modified Files
--------------
docs/en_US/appendices.rst    |    9 +-
docs/en_US/default-xsl.rst   |  217 ++++++++++++++++++++++++++++++++++++++++++
docs/en_US/main.rst          |    8 ++
docs/en_US/reports.rst       |    6 +
docs/en_US/sample-xml.rst    |   66 +++++++++++++
docs/en_US/search_object.rst |   26 +++++
6 files changed, 326 insertions(+), 6 deletions(-)