[EGD-3788] Fixes for message drafts feature after requirements elaboration. (#733)

[EGD-3799] Messages queries cleanups.

[EGD-3782] Fix: sending sms to new or deleted contact

[EGD-2870] Message drafts feature implemented. (#704)

- Save unsent messages as drafts on thread view window close.
- Queries for SMS add and update introduced.
- Fix for windows IDs all being zeroes across the GUI.

[EGD-2974] Support for temporary contacts as a group

[EGD-3532] identify thread with a number

Use phone number instead of contact number to identify a message thread
to allow having multiple threads for a contact if contact has multiple
numbers.

[EGD-3593] fixed unhandled factory-reset endpoint

added update file check in update endpoint
added missing getByThreadID message query

[EGD-3502] PR fixes

[EGD-3522] added missing queries

[EGD-3522] added ContactUpdate query

[EGD-3522] added ContactRemove query

[EGD-3502] fixed UT

[EGD-3522] added SMSTemplateGet query

[EGD-3522] added SMSGetCount query

[EGD-3522] added SMSGet query

[EGD-3522] added SMSTemplateGetCount query

[EGD-3522] added SMSTemplateGetCount query

[EGD-3522] added SMSTemplateAdd query

[EGD-3522] added SMSRemove query

[EGD-3522] added SMSTemplateRemove query

[EGD-3502] reworked endpoints and handlers
added endpoint listener to query

[EGD-3486] Implementation of SMS handling in service-desktop

added message removal method

added message marking as read/unread

added message thread to_json() method, fixed unit test

added template processing except search

added SMS gathering by contactID

added getByText sms query

added template search query

db: improve query handling

Introduce a new way to handle query responses allowing to deal with
races:
 - bind reponse with request,
 - handle responses with an observer-like interface.

Signed-off-by: Marcin Smoczyński <smoczynski.marcin@gmail.com>

[EGD-3281] SMS converstion view - UT

[EGD-3281] SMS converstion view - no try/catch

[EGD-3281] SMS converstion view - review notes
* extract update thread summary method
* move SmsTableRow → *$new* SmsRecord

[EGD-3281] SMS converstion view - refresh thread snippet on db change

[EGD-3435] fix SMS send again (moved to Query)

[feature] small fixes in message types etc

[EGD-3402] added Record base class for sms and thread table classes

[EDG-3402] minor clean up and error handling