first step to let a wpcom user without blog to sign in
second step to allow a wpcom user to signin without blog
Merge branch 'develop' into issue/343-wpcom-user-no-blog

Conflicts:
	src/org/wordpress/android/ui/WPActionBarActivity.java
New ‘Edit’ icons.
Send the activity context so WPHtml has the proper context reference.
Fixes #450. Seemed like a simple fix but I ran into a bunch of problems. Here’s a summary of the changes:

 * WPImageSpan appeared to be storing the exact same data as the MediaFile class. So I simply added a MediaFile instance to WPImageSpan and removed all of the places in code where the WPImageSpan data was copied over to the MediaFile.
 * Changed saveMediaFile() in wpDB to also update the media file db row if it already exists.
 * Fixed some naming conventions.
 * Changed WPImageSpan thumbnail to be larger in the post editor. Looks nice!
 * If a WPImageSpan is in the post editor, it will have an edit icon drawn in the lower-right corner to clue in the user that they can tap it to edit the image’s options.
* Removed some duplicated code related to creating image thumbnails.
Fixes media upload by using MediaFile.filePath instead of fileName. Cleaned up some code in PostUploadService.
Don’t show the edit icon if the MediaFile is a video.
Merge branch 'develop' into issue/450-editor-media-fixes
Fixes issue where new pictures added to existing posts were not saving.
Correcting placement of code, shouldn’t be in the for loop.
Fixed db update method to pass the selection arguments (face palm)
Simplified savePostContent() method.
Save existing post content even if we have no images in the post.
Create a separate Editable object instead of using the one from the post content EditText. Fixes issue where you’d see a split second of HTML as the post was saved or published.
Merge branch 'develop' into issue/343-wpcom-user-no-blog
don't setup current blog if the user is not signed in
Photon-ized image url is now retained and restored after rotation, causing the image to be reloaded from the cache rather than redownloaded
show the reader instead of the post list when the user login with a wpcom account without blog
Remove post signature when the user doesn't have visible blogs
use DB.getNumVisibleAccounts instead of DB.getVisibleAccounts to count visible blogs