Added translation issue template (#1377)

* Update issue templates

Add `translate.md`

* Update link to new translation issue

.github/ISSUE_TEMPLATE/bug.md

@@ -1,6 +1,10 @@
 ---
 name: Bug
 about: Report a bug
+title: ''
+labels: ''
+assignees: ''
+
 ---
 
 <!--

.github/ISSUE_TEMPLATE/feature.md

@@ -1,6 +1,10 @@
 ---
 name: Feature
 about: Suggest an idea
+title: ''
+labels: ''
+assignees: ''
+
 ---
 
 <!--

.github/ISSUE_TEMPLATE/question.md

@@ -1,6 +1,10 @@
 ---
 name: Question
 about: The issue tracker is not for questions. Please ask your question on StackOverflow.
+title: ''
+labels: ''
+assignees: ''
+
 ---
 
 __THE ISSUE TRACKER IS NOT FOR QUESTIONS.__  

.github/ISSUE_TEMPLATE/translate.md

@@ -0,0 +1,42 @@
+---
+name: Translate
+about: 'Help translate Material into more languages '
+title: 'New translation: {Insert language}'
+labels: enhancement
+assignees: ''
+
+---
+
+## Instructions
+
+1. Check, if your language is already available: [here](http://bit.ly/2DCzaL0)
+2. If it isn't, please translate the labels on the right:
+
+``` jinja
+{% macro t(key) %}{{ {
+  "language": "en",
+  "direction": "ltr",
+  "clipboard.copy": "Copy to clipboard",
+  "clipboard.copied": "Copied to clipboard",
+  "edit.link.title": "Edit this page",
+  "footer.previous": "Previous",
+  "footer.next": "Next",
+  "meta.comments": "Comments",
+  "meta.source": "Source",
+  "search.language": "en",
+  "search.pipeline.stopwords": true,
+  "search.pipeline.trimmer": true,
+  "search.placeholder": "Search",
+  "search.result.placeholder": "Type to start searching",
+  "search.result.none": "No matching documents",
+  "search.result.one": "1 matching document",
+  "search.result.other": "# matching documents",
+  "search.tokenizer": "[\s\-]+",
+  "skip.link.title": "Skip to content",
+  "source.link.title": "Go to repository",
+  "source.revision.date": "Last update",
+  "toc.title": "Table of contents"
+}[key] }}{% endmacro %}
+```
+
+Thanks!