Make save as dialog box use relative path to home dir when input doesn't start with \/
Make notebook saving dialog append .bkr to file names
Make file saving dialog work with directory selection, also fix file open dialog
Add file extension filter to file dialog box tree views
Add saveInNotExists to file-io service
Do not run initialization cell if loading from existing session
Separate control menu plugin into 2 pieces
Merge pull request #257 from twosigma/dev-internal

Dev internal
Merge remote-tracking branch 'origin/master' into dev-file-dialogs
Initial impl of file open/save error dialog state changing logic
Clean up file saving related logic
Add pwd to save-as filechooser
Make file-io load throw exception
Use bkCoreManager.showErrorModal instead of alert()
Disable save button is save-as dialog when input is empty or a dir
Change button text for overwrite existing file dialog box
Make sure dialog boxes buttons use bootstrap style
Replace ~ with homeDir in filechoosers
Make save-as dialog handle isDirectory selections better
Minor, add semicolons