Closes #209 - Open File in Remote should ask for a branch if no upstream

Fixes issue with new typescript
Pins node version to match vscode's version (7.9)

Adds menu & toolbar settings to the settings editor
Adds mode setting for settings editor
Adds sticky header to settings editor

Also adds icons for prev/next and places them into the editor toolbar

Adds the status bar reduce flashing setting
Adds the current line scrollable setting