Merge branch 'release/3.6.1'
Merge branch 'release/3.6.2'
Merge branch 'release/3.6.3'
Merge branch 'release/3.6.4'
Merge branch 'master' into develop
Don't override blog's url when updating password

When a user updated the password on a wp.com blog, it'd set the blog's
xmlrpc to wordpress.com/xmlrpc.php, and it'd return permission errors on
every request

resolves #32

Conflicts:
	WordPress/Classes/EditSiteViewController.m
Use GMT dates for API requests
Set right content mode before setting placeholder

resolves #33
Load images when reader appears

Fixes an issue where images wouldn't load on first launch or if the
topics selector was opened before the image was loaded.

resolves #26
Refactor UIActivity sharing to reuse code

* Sharing to mail sets subject. resolves #31
* WPWebViewController and reader use the same code now
* Added stats for reader detail. ping @sendhil for a second look