[BW]: [NIP] Implemented Draft folder storage. Still has problems:
- new email entry is created in the Drafts folder even already stored mail is again edited - this is caused by backend problems
- loading file attachment from saved mail is not yet implemented.
Merge branch 'master' of https://github.com/InvictusInnovations/keyhotee

Resolved Conflicts:
	KeyhoteeMainWindow.cpp
[BW]: [NIP] Subject/Recipient/attachment list changes should switch document into modified state.
[BW]: [NIP] Prerequisites for loading file attachment from existing mail messages.
fix build for g++
Catch exceptions thrown during initial application configuration.
Merge branch 'master' of https://github.com/InvictusInnovations/keyhotee
Add support for bcc_list in email message that can be saved into local databases. Keyhotee Issue 109.
Fixed: compile error:ui_ContactView.h:30:32:
Fixed: Ctrl+C in Public Key field reports Error Dialog
Blue circle in mailboxes now functions as an "unread" mark, instead of as a "read" mark, as per issue 92.
Fix some indentation issues (uncrustify doesn't know about foreach apparently).
[GS] Unread messages in bold and with blue circle
Merge branch 'master' of https://github.com/InvictusInnovations/keyhotee
Change call to remove_contact to match new input requirement (takes contact object instead of just index). Part of fix for issue 85.
Merge branch 'master' of https://github.com/InvictusInnovations/keyhotee
[GS] Removed title for column Ownership and added tooltip
Merge branch 'master' of https://github.com/InvictusInnovations/keyhotee
[GS] Added in mailbox viewer: "No selection" and "Multiple selection"
Just minor code cleanup and some comments clarified.
Creating new contact - modifications