Update issue templates

Author: getify

.github/ISSUE_TEMPLATE/content-question.md

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+---
+name: Content Question
+about: Ask a question about something you read in the books?
+labels: 
+
+---
+
+**Yes, I promise I've read the [Contributions Guidelines](https://github.com/getify/Functional-Light-JS/blob/master/CONTRIBUTING.md)** (please feel free to remove this line -- if you leave this line here, I'm going to assume you didn't actually read it).

.github/ISSUE_TEMPLATE/foreign-translation-request.md

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+---
+name: Foreign Translation Request
+about: Want to request a translation into a foreign language?
+labels: 
+
+---
+
+Please check these issues first:
+
+* https://github.com/getify/Functional-Light-JS/issues?utf8=%E2%9C%93&q=label%3A%22foreign+language+translations%22+
+* https://github.com/getify/Functional-Light-JS/issues/106
+* https://github.com/getify/Functional-Light-JS/issues/115
+
+To summarize, the steps for a foreign language translation are:
+
+1. Fork this repo
+2. Make your own translation entirely in your fork, preferably of all six books, but at a minimum of one whole book
+3. File an issue asking for a branch to be made on our main repo, named for that [language's ISO code](http://www.lingoes.net/en/translator/langcode.htm)
+4. Once the branch is created, you can PR to merge your translated work in
+5. Once the merge is complete, I will promote you to a repository maintainer so you can manage any further translation maintenance work on your own branch of this repo

.github/ISSUE_TEMPLATE/report-technical-mistake.md

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+---
+name: Report Technical Mistake
+about: Help us fix a mistake in the code.
+labels: 
+
+---
+
+**Yes, I promise I've read the [Contributions Guidelines](https://github.com/getify/Functional-Light-JS/blob/master/CONTRIBUTING.md)** (please feel free to remove this line -- if you leave this line here, I'm going to assume you didn't actually read it).

.github/ISSUE_TEMPLATE/textual-grammar-typo.md

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+---
+name: Textual/Grammar Typo
+about: Help us correct a spelling or grammar error in the text.
+labels: 
+
+---
+
+**Yes, I promise I've read the [Contributions Guidelines](https://github.com/getify/Functional-Light-JS/blob/master/CONTRIBUTING.md)** (please feel free to remove this line -- if you leave this line here, I'm going to assume you didn't actually read it).