[nemo-qml-plugin-email] Request network connection from application.
[nemo-qml-plugin-email] 'First char' properties added to EmailMessageListModel

These properties can be used as section header properties in list views.
[nemo-qml-plugin-email] EmailMessage::folderId added
[nemo-qml-plugin-email] Set priority header fields correctly.
[nemo-qml-plugin-email] Using MLocale::indexBucket for extracting the first char.
Merge pull request #52 from kananoja/master

[nemo-qml-plugin-email] Request network connection from application.
Merge pull request #53 from kananoja/section_header_properties

[nemo-qml-plugin-email] 'First char' properties added to EmailMessageListModel
Merge pull request #56 from kananoja/email_folderid

[nemo-qml-plugin-email] EmailMessage::folderId added
Merge pull request #57 from kananoja/set_priority

[nemo-qml-plugin-email] Set priority header fields correctly.
Merge pull request #59 from rainemak/bodyFallback

[nemo-qml-plugin-email] Return body text if no content found.
[nemo-qml-plugin-email] Save attachments to downloads folder