Update source/hosting/zope.rst

Add a paragraph about log levels.
Merge pull request #75 from ebrehault/master

Log levels paragraph
Improve formulation.
Fix bad edit.
Fix a typo and whitespace.
Wrap one-line paragraphs; make headlines consistent.
Added fuzzy search pointer
Add a separate TOC doc for installation/hosting/maintentance so that we can point to it from Plone.Org/documentation
Add packing page
Add link
Created manuals section
Moved buildout to Old manuals section
Moved portlets to dead manuals section
Cleaning up index reference after hulabalooba
No separate install entry point needed
Moved troubleshooting items as top level items to main doc page
Unified troubleshooting doc titles
Make functionality section readable
Moved Zope 2 internals to final deposition
Moved documentation style guides to references section