support for creating unsaved content from templates (without create_dir)
add getFileMode function
use user-provided secure-cookie-key if it exists
apply author, title, and date to single-file templates
send/accept http 503 for json-rpc server-offline state
force suspend all sessions as part of offline command
don't mutate YAML front matter for R Markdown templates
highlighting for chain operator
Merge branch 'master' of github.com:/rstudio/rstudio
guard against exceptions when detecting current output window URL
Merge pull request #107 from rstudio/feature/rmd-template-improvements

Clarify template creation UI
add number_sections to html_document ui
increase size of template options dialog
apply new front matter correctly; fix eclipse warnings
initial support for slide navigation in Shiny apps
initialize slide menu when running as a Shiny presentation
only convert 503 to ServerOffline event for events scope
poll for hash change (ioslides compatibility)
set slide index directly with ioslides api (avoid re-render on slide change)
Merge branch 'feature/shiny-slide-navigation'