Implementing AttachmentItem GsonTypeAdapter.

Because apparently this wasn't done a million years ago.
Fix attachment item type adapter parent type.
Implemented detached Attachment creation, and bitmap resizing when
loaded by the controller
Moved attachments from QABody into new class QuestionBody
added attachmentview to create question screen
Added attachment view to question creation page, implemented
adding_enabled property in xml
Added AttachmentDisplayView which simplifies the AttachmentView.
Implemented add attachment button outside of the AttachmentView. Added
Attachment name field in the attachment popup.
Fixed error with question ids
Made attachments display a square preview in the display view. Made the
formatting a little nicer.
Deleted AttachmentView (most of its functionality was moved to
AttachmentDisplayView).
Removed commented out test code
fixing egit's newline stupidity. Also deleted an xml that's no longer needed
Merge pull request #197 from coreyjamison/attachments

Attachments