Updated highlightjs to support many more languages (#6)

We updated highlight.min.js library to newer version (v9.12.0 -> 10.2.0) and added support for many languages. Updated extensionMap accordingly and also removed from it some unnecessary aliases, like 'json' since they are already natively supported by highlight.min.js library.
There also a new documentation page under docs/languages.md which lists all supported aliases.

docs/languages.md

@@ -0,0 +1,59 @@
+# Supported Languages
+Haste-server supports all 38 "common" languages according to [highlight.js](https://highlightjs.org/), the syntax library used for this project.
+Any extra languages originally put into this project have remained as well for a total of 47 languages.
+
+Below is a table of every supported language and it's shorthand if it has one. The shorthand can be used as a file extension.
+(For example https://haste.zneix.eu/ovanazeyad.rust could be re-written as https://haste.zneix.eu/ovanazeyad.rs).
+It is also perfectly valid to just use the name of the language (https://haste.zneix.eu/sadf.haskell)
+
+If the library guesses the language wrong you can replace the file extension with the correct language to force highlighting for that language
+
+| Language | Extension |
+|----------|-----------|
+| Apache Config | apache
+| Bash | sh
+| C | c
+|  C-like foundation grammar<br>for C/C++ grammars | clike
+| CoffeeScript | coffee
+| C++ | cpp
+| C# | cs
+| CSS | css
+| Delphi | dpr
+| Diff | diff
+| Erlang | erl
+| Go | go
+| Haskell | hs
+| HTTP | http
+| TOML/INI | ini
+| Java | java
+| JavaScript | js
+| JSON | json
+| Kotlin | kt
+| LaTeX | tex
+| Less | less
+| Lisp | lsp
+| Lua | lua
+| Makefile | mk
+| Markdown | md
+| Nginx config | nginx
+| Objective-C | mm
+| Perl | pl
+| PHP | php 
+| PHP Template | phptemp
+| Plain text | txt
+| .properties | properties
+| Python | py
+| Python REPL | pyrepl
+| Ruby | rb
+| Rust | rs
+| Scala | sc
+| SCSS | scss
+| Shell Session | shell
+| Smalltalk | sm
+| SQL | sql
+| Swift | swift
+| TypeScript | ts
+| Vala | vala
+| VBScript | vbs
+| XML | xml 
+| YAML | yaml

static/application.js

@@ -333,13 +333,11 @@ class haste {
 // due to the behavior of lookupTypeByExtension and lookupExtensionByType
 // Note: optimized for lookupTypeByExtension
 haste.extensionMap = {
-	rb: 'ruby', py: 'python', pl: 'perl', php: 'php', scala: 'scala', go: 'go',
+	sh: 'bash', clike: 'c-like', coffee: 'coffeescript', cs: 'csharp', dpr: 'delphi',
-	xml: 'xml', html: 'xml', htm: 'xml', css: 'css', js: 'javascript', vbs: 'vbscript',
+	erl: 'erlang', hs: 'haskell', js: 'javascript', kt: 'kotlin', tex: 'latex',
-	lua: 'lua', pas: 'delphi', java: 'java', cpp: 'cpp', cc: 'cpp', m: 'objectivec',
+	lsp: 'lisp', mk: 'makefile', md: 'markdown', mm: 'objectivec', phptemp: 'php-template',
-	vala: 'vala', sql: 'sql', sm: 'smalltalk', lisp: 'lisp', ini: 'ini',
+	pl: 'perl',	txt: 'plaintext', py: 'python', pyrepl: 'python-repl', rb: 'ruby', rs: 'rust',
-	diff: 'diff', bash: 'bash', sh: 'bash', tex: 'tex', erl: 'erlang', hs: 'haskell',
+	sc: 'scala', sm: 'smalltalk', ts: 'typscript', vbs: 'vbscript', html: 'xml', htm: 'xml',
-	md: 'markdown', txt: '', coffee: 'coffee', json: 'javascript',
-	swift: 'swift'
 };
 
 
@@ -351,7 +349,6 @@ haste.extensionMap = {
 
 
 
-
 ///// Tab behavior in the textarea - 2 spaces per tab
 $(function(){
 	$('textarea').keydown(function(evt){