Scroll post-item-view into view

Closes #3998
- Scroll the active post into view on page load
- If the active post changes and the newly active post is offscreen, scroll it into the middle of the screen
Update downsize node module. Small test updates.

issue #4017
- downsize 0.0.5 -> 0.0.8
- downsize is now better at punctuation, update {{content}} and {{excerpt}} tests appropriately.

Conflicts:
	package.json
Update syntax in ember templates.

No Issue.
- Outlet names must be quoted.
- {{#each}} helper will no longer implicitly switch context.
  Change usage to {{#each foo in bar}}.
Merge pull request #4594 from jaswilli/ember19-prep

Update syntax in ember templates.
Change sitemap root location

Closes #4590

- Removes `-index` from the root sitemap
- Removes redirects (which send sitemap.xml to sitemap-index.xml)
- Adjust tests
Merge pull request #4599 from PaulAdamDavis/sitemap-index

Change sitemap root location
Fix reset token verification

closes #3872
closes #4603
- updated regex to work with url safe tokens
Merge pull request #4604 from sebgie/issue#3872-1

Fix reset token verification
Adds ctrl/cmd+s shortcut to whole application with a noop default

closes #4516
- shortcut for ctrl/cmd+s on application level
- shortens a syntax for any route that is using 'save' method, shortcuts object doesn't have to be defined at all, only the save action.
Merge pull request #4523 from Gargol/issue-4516

Adds ctrl/cmd+s shortcut to whole application with a noop default
Dry up tag saving behavior

Ref #4248
Merge pull request #4610 from novaugust/tag-save-refactor

Dry up tag saving behavior
Sitemaps correctly filter draft posts

fixes #4612

- adds missing line of code to remove draft posts
- adds tests to check drafts aren't added
Merge pull request #4614 from ErisDS/issue-4612

Sitemaps correctly filter draft posts
Update technical details version numvers

They were a bit dated. Nothing else.
Sort newest to oldest in sitemap files

Closes #4611

Refactored generateXmlFromNodes to pull the urlElements itself from
sorted values in the lookup

Added some checks to existing unit tests to validate ordering.
Added Highlight to Markdown Help
Change user deletion warning to be more explicit.

Issue #4583
- If a user has posts, show the count in the deletion warning.
Merge pull request #4617 from dbalders/markdown

Added Highlight to Markdown Help
Swap button-order on modal dialogs

Issue #4583

- Delete button should be on the right, cancel on the left, for all modal dialogs.