Removed unused CSS

Commented some parts of html code in index.html
Global function were moved to HIDE class

show HIDE only when page is ready
registerHotkeyByCode function
Moved Bootstrap and jQuery to plugins
Very basic plugin system

HIDE will recompile all plugins before loading them(for debugging
purposes)
Plugin now can depend on another plugin

Plugin will wait for dependent plugin to be loaded, until timeout is
reached.
Now plugin can depend on multiple plugins
Added name and dependencies fields to plugins