Add jquery and flot to catapult/third_party.

third_party/flot/CONTRIBUTING.md

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+## Contributing to Flot ##
+
+We welcome all contributions, but following these guidelines results in less
+work for us, and a faster and better response.
+
+### Issues ###
+
+Issues are not a way to ask general questions about Flot. If you see unexpected
+behavior but are not 100% certain that it is a bug, please try posting to the
+[forum](http://groups.google.com/group/flot-graphs) first, and confirm that
+what you see is really a Flot problem before creating a new issue for it.  When
+reporting a bug, please include a working demonstration of the problem, if
+possible, or at least a clear description of the options you're using and the
+environment (browser and version, jQuery version, other libraries) that you're
+running under.
+
+If you have suggestions for new features, or changes to existing ones, we'd
+love to hear them! Please submit each suggestion as a separate new issue.
+
+If you would like to work on an existing issue, please make sure it is not
+already assigned to someone else. If an issue is assigned to someone, that
+person has already started working on it. So, pick unassigned issues to prevent
+duplicated effort.
+
+### Pull Requests ###
+
+To make merging as easy as possible, please keep these rules in mind:
+
+ 1. Submit new features or architectural changes to the *<version>-work*
+    branch for the next major release.  Submit bug fixes to the master branch.
+
+ 2. Divide larger changes into a series of small, logical commits with
+    descriptive messages.
+
+ 3. Rebase, if necessary, before submitting your pull request, to reduce the
+    work we need to do to merge it.
+
+ 4. Format your code according to the style guidelines below.
+
+### Flot Style Guidelines ###
+
+Flot follows the [jQuery Core Style Guidelines](http://docs.jquery.com/JQuery_Core_Style_Guidelines),
+with the following updates and exceptions:
+
+#### Spacing ####
+
+Use four-space indents, no tabs.  Do not add horizontal space around parameter
+lists, loop definitions, or array/object indices. For example:
+
+```js
+    for ( var i = 0; i < data.length; i++ ) {  // This block is wrong!
+        if ( data[ i ] > 1 ) {
+            data[ i ] = 2;
+        }
+    }
+
+    for (var i = 0; i < data.length; i++) {  // This block is correct!
+        if (data[i] > 1) {
+            data[i] = 2;
+        }
+    }
+```
+
+#### Comments ####
+
+Use [jsDoc](http://usejsdoc.org) comments for all file and function headers.
+Use // for all inline and block comments, regardless of length.
+
+All // comment blocks should have an empty line above *and* below them. For
+example:
+
+```js
+    var a = 5;
+
+    // We're going to loop here
+    // TODO: Make this loop faster, better, stronger!
+
+    for (var x = 0; x < 10; x++) {}
+```
+
+#### Wrapping ####
+
+Block comments should be wrapped at 80 characters.
+
+Code should attempt to wrap at 80 characters, but may run longer if wrapping
+would hurt readability more than having to scroll horizontally.  This is a
+judgement call made on a situational basis.
+
+Statements containing complex logic should not be wrapped arbitrarily if they
+do not exceed 80 characters. For example:
+
+```js
+    if (a == 1 &&    // This block is wrong!
+        b == 2 &&
+        c == 3) {}
+
+    if (a == 1 && b == 2 && c == 3) {}  // This block is correct!
+```