1. Added a default language ('en-US') for windows
2. Included app.asar.unpacked dir in the windows installer as `spawn-rx` module is required for spellchecker to work.
* electron-77: added support for alwaysOnTop in mac installer
* updated the gitignore file to exclude vscode settings
* electron-77: added option for alwaysOnTop for windows installer
* electron-77: fixed the aip certficiate disabled issue, updated the gitignore to ignore aip cache and setup files