Don't explicitly reference global jQuery

Removes `window.jQuery` in favor of `jQuery`, fixes #10038
Bower: Ignore development and documentation files on bower.json. Fix #10313.

I've kept only the files I consider relevant to bower installation:

- Files in dist directory;
- Files in js directory;
- Files in less directory;
- bower.json file;
- README.md file;
- LICENSE file.
add responsive CSS to hyperlinked images when thumbnail caption markup is used

When thumbnail caption markup is used in combination with a hyperlinked image, the image is not responsive. (non-hyperlinked images are fine, like the example in the docs) Adding a selector to apply responsiveness to hyperlinked images when thumbnail captions are used.
bower.json: Modify `assets` directory on ignore to `docs-assets`
removed outline from modal
Customizable backdrop opacity
Added opacity to customizer and rebuilt customizer
Fixes issue #11098 -- Button documentation.
Adding contextual styles to list-items
Active state overrides contextual list-item styles
Options of sizes added in modal
added bower_components to .gitignore
Adjust in modal size rules
Add quick fix to labels and badges in buttons
remove unused `{{ page.base_url }}` variables, and fix the urls
JS comments pointed to new documentation
Merge pull request #11275 from jared-christensen/master

JS comments pointed to new documentation
Change tense to imperative

Matches this comment with the commit messages and other comments.
Merge pull request #11278 from ZDroid/patch-1

Change tense to imperative
Combine multiple .thumbnail > img styles