[akashindya]

[1] Yes, it was a mistake. Has been corrected.

[2] We have many modules running inside our ecosystem in different languages. Front-end is primarily bootstrap and templating is done in PHP. Tech stacks are important for folks who primarily want to work with given technology, however, our culture promotes using the best one for a given job and thus we don't want to restrict ourselves to a specific tech stack.

[3] We are working on adding sample codes for all the mentioned languages.