[EGD-5737] Merge master into experimental

Keep experimental up to date with changes from master

[EGD-5737] Merge master into experimental

Keep experimental up to date with changes from master

[EGD-4801] Add application-wide top bar manager

Applications configure the top bar once for all their windows.
Sometimes, windows need to configure top bars with its configuration.

Merge branch 'master' into stable

[EGD-5166] Add query-callback synchronization mechanism

Receiver object cancels the callbacks at the end of its lifecycle.

[EGD-4925] Change new filesystem handling implementation in module-gui. (#1193)

Due to vfs deprecation there is need to remove all vfs calls from code. This PR covers module gui. There are some modifications in other modules included which are necessary because of build system issues.

[EGD-4696] Several stabilization patches. (#1192)

[EGD-3442] Fix list empty window unhandled behaviours, in place rebuild handling, notes rebuild on note deletion and changed call Icon name to stateIcon. (#1160)

Merge branch 'master' into stable

[EGD-4150] Change filename i18 to i18n (#1108)

Change filename of internationalization files from i18 to i18n.

I18n should stand for internationalization, not i18. That's why I changed in 'module-utils' name of the folder 'i18' and both .cpp and .hpp files to 'i18n'.

[EGD-4217] Convert service-db to library

[EGD-4213] Convert service-appmgr to library - library (#960)

[EGD-4151] Application manager actions introduced. (#905)

* [EGD-4151] Application manifest structure defined.
* [EGD-4156] Applications registry and basic action handler implemented.

[EGD-4070] Messages listView sync db queries refactored to full async. (#837)

[EGD-3743] Update copyrights in fies

[EGD-3799] Messages queries cleanups.

[EGD-3720] Database service API cleanup for messages application. (#720)

- Major cleanup of database query usage.

[EGD-3760] ListView added support to rebuild on provided offset.

[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-3265] Application messages file structure renames and cleanups.