Include separate modules in custom builds

[drKnoxy]

I thought it would be a cool feature if the 'Custom Builds' separated out each module. That way if i download and use the code for the datepicker, and then later download the code for dropdown I don't have two copies of position in my lib.

For example I make a custom build of the datepicker module and receive the following files:

1. ui-bootstrap-dateparser-0.14.3.js and .min.js

   angular.module('ui.bootstrap.dateparser', [])

2. ui-bootstrap-position-0.14.3.js and .min.js

   angular.module('ui.bootstrap.position', [])

3. ui-bootstrap-datepicker-0.14.3.js and .min.js

   angular.module('ui.bootstrap.datepicker', [
       'ui.bootstrap.dateparser',
       'ui.bootstrap.position'
   ])

4. ui-bootstrap-datepicker-tpls-0.14.3.js and .min.js
   Also I wanted to point out that templates use double quotes instead of singles, and it irks me to see them mixed when i view -tpl.js file

   angular.module('ui.bootstrap.datepicker.tpls', [
       'template/datepicker/datepicker.html',
       'template/datepicker/day.html',
       'template/datepicker/month.html',
       'template/datepicker/popup.html',
       'template/datepicker/year.html'
   ]);

5. And concatenated copies where ui.bootstrap is the only module you need to import

   ui-bootstrap-custom-0.14.3.js
   ui-bootstrap-custom-0.14.3.min.js
   ui-bootstrap-custom-tpls-0.14.3.js
   ui-bootstrap-custom-tpls-0.14.3.min.js

   angular.module('ui.bootstrap', [
       'ui.bootstrap.datepicker',
       'ui.bootstrap.datepicker.tpls', // conditionally included
       'ui.bootstrap.dateparser',
       'ui.bootstrap.position'
   ]);
   // and then all of the modules concatenated below

This might be an interesting update for the docs revamp ticket #4798

[wesleycho]

We probably won't support this specifically, but keep an eye out for #4739 - with CommonJS via Browserify or Webpack, one will then be able to require only what one needs.