don't write *.html files when previewing package root docs (e.g. README.md) or vignettes
Revert "don't silent update rmarkdown if it wasn't originally installed from the ide repo"

This reverts commit b07a6bfabf5e091632f61e6ba89a67b57bb7fe6d.
use View PDF url rather than generic file server (for desktop)
fix detection of Cmd+Click on Cocoa (for SyncTex)
move compile notebook to main toolbar; allow specification of format in call to renderRmd
include notebook format in prefs/options
keep window client name around; fix PDF.js window title
use desktop window activation for SyncTex on Cocoa
change default notebook type to html
initial support for internal viewer for R Markdown; improve perf
initial support for restoring position on load
use bookmark href to cache PDF viewer location (reduce coupling)
fix SyncTex navigation when current scale is non-numeric
Merge remote-tracking branch 'origin/master' into feature/pdfjs-refresh
revert addition of format to notebook options
detect PDF.js window closure on Mac desktop
improve Sweave compile experience; clean up unused event
use PDF.js if selected as a preference for R Markdown output on desktop
qualify rmarkdown format
compile notebook v2 options dialog