Moved vendored js/css into `public/vendor` and documented sources (#1484) (#2241)

* Cleaning up public/ and documenting js/css libs.

This commit mostly addresses #1484 by moving vendor'ed plugins into a
vendor/ directory and documenting their upstream source and license in
vendor/librejs.html.

This also proves gitea is using only open source js/css libraries which
helps toward reaching #1524.

* Removing unused css file.

The version of this file in use is located at:
  vendor/plugins/highlight/github.css

* Cleaned up librejs.html and added javascript header

A SafeJS function was added to templates/helper.go to allow keeping
comments inside of javascript.

A javascript comment was added in the header of templates/base/head.tmpl
to mark all non-inline source as free.

The librejs.html file was updated to meet the current librejs spec. I
have now verified that the librejs plugin detects most of the scripts
included in gitea and suspect the non-free detections are the result of
a bug in the plugin. I believe this commit is enough to meet the C0.0
requirement of #1534.

* Updating SafeJS function per lint suggestion

* Added VERSIONS file, per request

1 files changed, 0 insertions, 162 deletions

diff --git a/public/plugins/codemirror-5.17.0/mode/turtle/turtle.js b/public/plugins/codemirror-5.17.0/mode/turtle/turtle.js
deleted file mode 100644
index 0988f0a442..0000000000
--- a/public/plugins/codemirror-5.17.0/mode/turtle/turtle.js
+++ /dev/null
@@ -1,162 +0,0 @@
-// CodeMirror, copyright (c) by Marijn Haverbeke and others
-// Distributed under an MIT license: http://codemirror.net/LICENSE
-
-(function(mod) {
-  if (typeof exports == "object" && typeof module == "object") // CommonJS
-    mod(require("../../lib/codemirror"));
-  else if (typeof define == "function" && define.amd) // AMD
-    define(["../../lib/codemirror"], mod);
-  else // Plain browser env
-    mod(CodeMirror);
-})(function(CodeMirror) {
-"use strict";
-
-CodeMirror.defineMode("turtle", function(config) {
-  var indentUnit = config.indentUnit;
-  var curPunc;
-
-  function wordRegexp(words) {
-    return new RegExp("^(?:" + words.join("|") + ")$", "i");
-  }
-  var ops = wordRegexp([]);
-  var keywords = wordRegexp(["@prefix", "@base", "a"]);
-  var operatorChars = /[*+\-<>=&|]/;
-
-  function tokenBase(stream, state) {
-    var ch = stream.next();
-    curPunc = null;
-    if (ch == "<" && !stream.match(/^[\s\u00a0=]/, false)) {
-      stream.match(/^[^\s\u00a0>]*>?/);
-      return "atom";
-    }
-    else if (ch == "\"" || ch == "'") {
-      state.tokenize = tokenLiteral(ch);
-      return state.tokenize(stream, state);
-    }
-    else if (/[{}\(\),\.;\[\]]/.test(ch)) {
-      curPunc = ch;
-      return null;
-    }
-    else if (ch == "#") {
-      stream.skipToEnd();
-      return "comment";
-    }
-    else if (operatorChars.test(ch)) {
-      stream.eatWhile(operatorChars);
-      return null;
-    }
-    else if (ch == ":") {
-          return "operator";
-        } else {
-      stream.eatWhile(/[_\w\d]/);
-      if(stream.peek() == ":") {
-        return "variable-3";
-      } else {
-             var word = stream.current();
-
-             if(keywords.test(word)) {
-                        return "meta";
-             }
-
-             if(ch >= "A" && ch <= "Z") {
-                    return "comment";
-                 } else {
-                        return "keyword";
-                 }
-      }
-      var word = stream.current();
-      if (ops.test(word))
-        return null;
-      else if (keywords.test(word))
-        return "meta";
-      else
-        return "variable";
-    }
-  }
-
-  function tokenLiteral(quote) {
-    return function(stream, state) {
-      var escaped = false, ch;
-      while ((ch = stream.next()) != null) {
-        if (ch == quote && !escaped) {
-          state.tokenize = tokenBase;
-          break;
-        }
-        escaped = !escaped && ch == "\\";
-      }
-      return "string";
-    };
-  }
-
-  function pushContext(state, type, col) {
-    state.context = {prev: state.context, indent: state.indent, col: col, type: type};
-  }
-  function popContext(state) {
-    state.indent = state.context.indent;
-    state.context = state.context.prev;
-  }
-
-  return {
-    startState: function() {
-      return {tokenize: tokenBase,
-              context: null,
-              indent: 0,
-              col: 0};
-    },
-
-    token: function(stream, state) {
-      if (stream.sol()) {
-        if (state.context && state.context.align == null) state.context.align = false;
-        state.indent = stream.indentation();
-      }
-      if (stream.eatSpace()) return null;
-      var style = state.tokenize(stream, state);
-
-      if (style != "comment" && state.context && state.context.align == null && state.context.type != "pattern") {
-        state.context.align = true;
-      }
-
-      if (curPunc == "(") pushContext(state, ")", stream.column());
-      else if (curPunc == "[") pushContext(state, "]", stream.column());
-      else if (curPunc == "{") pushContext(state, "}", stream.column());
-      else if (/[\]\}\)]/.test(curPunc)) {
-        while (state.context && state.context.type == "pattern") popContext(state);
-        if (state.context && curPunc == state.context.type) popContext(state);
-      }
-      else if (curPunc == "." && state.context && state.context.type == "pattern") popContext(state);
-      else if (/atom|string|variable/.test(style) && state.context) {
-        if (/[\}\]]/.test(state.context.type))
-          pushContext(state, "pattern", stream.column());
-        else if (state.context.type == "pattern" && !state.context.align) {
-          state.context.align = true;
-          state.context.col = stream.column();
-        }
-      }
-
-      return style;
-    },
-
-    indent: function(state, textAfter) {
-      var firstChar = textAfter && textAfter.charAt(0);
-      var context = state.context;
-      if (/[\]\}]/.test(firstChar))
-        while (context && context.type == "pattern") context = context.prev;
-
-      var closing = context && firstChar == context.type;
-      if (!context)
-        return 0;
-      else if (context.type == "pattern")
-        return context.col;
-      else if (context.align)
-        return context.col + (closing ? 0 : 1);
-      else
-        return context.indent + (closing ? 0 : indentUnit);
-    },
-
-    lineComment: "#"
-  };
-});
-
-CodeMirror.defineMIME("text/turtle", "turtle");
-
-});