Timing of 'chosen:showing_dropdown' fixed

Currently the event is triggered before dropdown LI's
are created. This commit corrects it by moving the
trigger event at end of method. A JSFIDDLE was created
to demonstrate the issue.

http://jsfiddle.net/lagrz/3A5jq/

By moving the event it enables developers to add
whatever additional code or styling to the dropdown
menu options such as images.
Fire the `chosen:showing_dropdown` event only after results
are totally built.

Further information about this fix is described in:
3246598cbb93b66026828ab85754c65378f43ea9
add support for cut/paste events

A short delay (currently 50ms) is required after the paste event for the
pasted text to enter the textbox.  Then we can trigger a `keyup` event as if
that copy had just been typed into the box manually.
Change `search_text` to use `option.text` rather than `option.html`
trigger "chosen:no_results" event, with second arguments added
Add note that Chosen is disabled on mobile
Fix closing selects in pop out windows by moving document event bindings to the container's ownerDocument.
Merge pull request #1745 from mickylad/bind-events-to-owner-document

Fix closing selects in pop out windows by moving document event bindings...
Slightly more accurate copy
Merge pull request #1741 from harvesthq/chosen_on_mobile_docs

Add note that Chosen is disabled on mobile
Merge pull request #1603 from daveworth/1601/support_paste_events

Add support for paste events
Merge pull request #1478 from harvesthq/change-list-showing-event-order

Trigger/Fire Results Showing Event After Winnow
Merge pull request #1712 from lightxu/patch-1

Empty search triggers "chosen:no_results" event
Add documentation for the chosen:no_results event
Update the options copy to be a little more DRY
Merge pull request #1766 from harvesthq/add-no-results-docs

Add documentation for new `no_results` event
Fix weird casing in docs
Docs typo + formatting
Smart people use smart quotes
Whitespace :scissors: