[DM] docs for all packages (#818)

* run all packages through Documentalist (easy glob change 👍)
* index.md page for each package, _nav in docs
* update nesting in datetime docs
* title in styleguide
* change default page
* fix Table links, rename page to just Table
* move color aliases table styles to live with its family

gulp/docs.js

@@ -28,7 +28,7 @@ module.exports = (blueprint, gulp, plugins) => {
     gulp.task("docs-json", () => {
         return dm.Documentalist.create({ renderer: text.renderer })
             .use(".scss", new dm.KssPlugin())
-            .documentGlobs("packages/core/src/**/*")
+            .documentGlobs("packages/*/src/**/*")
             .then((contents) => {
                 function nestChildPage(child, parent) {
                     const originalRef = child.reference;

packages/core/src/components/table/table.md

@@ -6,7 +6,7 @@ This component adds Blueprint styling to native HTML tables.
     <h5>This is not @blueprintjs/table</h5>
     This table component is a simple CSS-only skin for HTML `<table>` elements.
     It is ideal for basic static tables. If you're looking for more complex
-    spreadsheet-like features, check out [**@blueprintjs/table**](#components.table-js).
+    spreadsheet-like features, check out [**@blueprintjs/table**](#table-js).
 </div>
 
 @## CSS API