Help me with my first Mozilla Extension - firefox

I am new to Mozilla extensions and i have been trying to build the "hello world" following this tutorial https://developer.mozilla.org/en/Building_an_Extension but unfortunately its not showing anything on the right of my status bar when i start Firefox with my development profile. I have checked everything many times and not found any mistake in my code or file pattern. I'm doing everything they say in that tutorial. Now I'm seriously getting doubts on this tutorial is there something wrong with it ? have they missed out on anything that i should know? help me out here please

I would like to post this information about that tutorial on building firefox extensions that it has major flaws in it which result in no output of what is being said in it, i have reported it and for starters here is another very helpful link thanks to which i was able to build my extension.
http://blog.mozilla.com/addons/2009/01/28/how-to-develop-a-firefox-extension/

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(Starter. Stuck on this point) generated Rails project : missing the config/routes.rb file

Following this article everything works but I'm stuck on routing welcome index page as this mentioned file is missing.
please mention workaround or if I'm missing anything.
(Try not to post screenshots. And learning Ubuntu is easier than trying to code Rails on Windows, by a mile...)
You are in assets/config. Look in Blog\config.

nobody can get cocoadocs page for swift framework

Trying to post to CocoaPods, but when the project goes through it doesn’t generate docs (site + docs button, instead of expand). Alternatively, when I specify a docs url the docs button doesn’t work either. According to the guides, it seems like jazzy isn’t parsing, but when I run:
jazzy
or...
jazzy —podspec MagicCloud.podspec
…it throws no errors and generates 100% documentation (which is hosted here). At the 404 page, If I select the Alternatively, click… or Potential error info buttons no luck. I’ve tried with and without a .yaml file generated here. When I try to use the following…
http://api.cocoadocs.org:4567/redeploy/MagicCloud/2.9.x // x = 5,6,7,8,etc…
http://api.cocoadocs.org:4567/error/MagicCloud/2.9.x // x = 5,6,7,8,etc…
…safari can’t find the server. I’ve posted so many versions at this point, any help would be much appreciated. The project is here, along with it's podspec file. Thanks in advance.
So after contacting Orta (the developer) directly, I eventually found out that he had handed the project off to Buddy Build. With their acquisition by Apple, they're holding off on new clients and are no longer offering support to Cocoapods.
As far as I can tell, no new Cocoapods have been able to compile their docs (at least through jazzy / swift), since the announcement January 2018. If anyone knows different, or if things change, please post here. Thanks.

pydev download links don't work

I'm trying to download Pydev and having no luck at all. I'm told to click on the link for updates, (http://www.pydev.org/updates) but I'm then sent to a "dummy" site with other links that are no help at all. I've been at it for a couple of days now with no luck. I have Eclipse Neon so I'm ready to go as far as that's concerned. Anyone know what's happening and how to resolve this? Thanks.
Actually, that's not a link you're supposed to click... you should add it as an update site in Eclipse in Help > Install New Software.
See http://www.pydev.org/download.html for a better explanation.
in my eclipse it try to work with file content.xml that not exist on the link.
I try with
jar:https://dl.bintray.com/fabioz/pydev/5.4.0/content.jar!/
and it work to me

Mean.js, where do I start?

I have to make a web application with Meanstack for a school project. I have downloaded and installed the newest version of the Mean.js boilerplate (http://meanjs.org/) and got the sample site working. But I have no idea how to continue. There are so many files in the project directory. Can somebody please tell me the files I can/need to change to start building my own app?
I'm very new to programming, so sorry if this is a stupid question. I'd really appreciate an answer.
This is what the project folder looks like.
The meanjs.org documentation (here) has plenty of great information about what each file does, and what you might need to research to get started. Besides that there are a lot of great tutorials out there, one I liked in particular was this youtube series.
Please note that in these examples I am using the mean stack from meanjs.org, not mean.io, and I am using version 0.3. If you are using a different MEAN stack, or version, I would still recommend first looking through the official documentation, and then various tutorials online.

What IDE to use to start contributing code for CKEditor?

It's my first question here on stackoverflow so please be easy on me.
I've been trying to set up the source for CKEditor so I can start contributing to this editor. I have followed this link: http://docs.ckeditor.com/#!/guide/dev_contributing_code but I got stuck on step 4 as I haven't got the following file: bender.js. I also need something called gruntfile for step 5. Do you know where I can get them from as when I fork https://github.com/ckeditor/ckeditor-dev, the following project does not come with them. Also, what IDE do I need to use to develop code? Sorry, for this question as it might seem a bit stupid but I come from the Java background and Node.js is really new to me, therefore I'm struggling a bit here.
Thanks for any help
There are no requirements regarding IDE, at the end it's all just text.
Regarding your problems: Make sure you're forking ckeditor-dev, and not ckeditor-releases repository. Only dev repository contains all the helpers like gruntfile.
The gruntfile is there so if you cloned CKEditor repository, you must have it.
Then all you need to do is follow up the instructions of CKEditor contribution guide closesly, and you're good to go!

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