conf.py: Change manual version to 1.6

and change "documentation" to "user manual"

source/conf.py

@@ -51,9 +51,9 @@ copyright = u'2011-2012, Catalyst IT and others'
 # built documents.
 #
 # The short X.Y version.
-version = '1.5'
+version = '1.6'
 # The full version, including alpha/beta/rc tags.
-release = '1.5'
+release = '1.6'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
@@ -181,7 +181,7 @@ latex_paper_size = 'a4'
 # Grouping the document tree into LaTeX files. List of tuples
 # (source start file, target name, title, author, documentclass [howto/manual]).
 latex_documents = [
-  ('index', 'Mahara.tex', u'Mahara documentation',
+  ('index', 'Mahara.tex', u'Mahara user manual',
    u'Catalyst IT and others', 'manual'),
 ]