update to pandoc 1.13
update to yesod-auth-oauth2 0.0.10
comment to add multi page toc
toc processed separately
cache table of contents, categories, and page separately
display single links in paragraph as html list element in the table of content
remove unused import in src/gitit2.hs
remove dependency of cache functions on class HasGitit
unified pathFor's functions
Table of contents extends to Subpage, where a subpage is a wikilink of the from [mySubpage](!toc) alone in a paragraph