[EGD-5317] Module-db UT solved

Vfs init.
Convertion time string to unix time returns 1 hour later than should.
DatabaseInitializer stub that just creates empty dbs with table
structure but without data. Notification table initial records moved
to Database Initilize section. UT run with a stub of Database
Initialize - new test section introduced to test original
initializer: test-initializer.
Added missing data for contacts db to run the sorted list test
and test fix.

[EGD-5118] Unit tests for service-db solved

The rest of test (module-db) are solved in EGD-5317

[EGD-5118] Settings api tests dependencies updated

Temporary test for ASAN error.
Stub Database introduced to cut the connection SettingsAgent to
sqlite for UT.
Settings ut moved to other directory - new target.
File_indexer UT fixed.
Alarms, Notes and Query UT missing initialization of vfs.

[EGD-5115] Fix dangling ptrs in module-db tests

The dangling ptrs derefencing freed memory has been fixed.
They caused the tests to trigger the ASan. Additonally, in some tests
where DB objects were allocated dynamically, they are now allocated
automatically on the stack to simplify the code.

[EGD-4763] Fix Unit Tests - db unittest

Fix reqired by CI to work

[EGD-4763] Fix Unit Tests

First attempt, move vfs to be init in tests

[EGD-4708] Add backend of multiday events handling

-sql req for multiday events handling
-Add UT
-Add markEventsInDays method
-Add new query for day filter

Merge branch 'master' into stable

[EGD-5325] Remove using namespace directives from headers

"Using namespace" directive should not be added in headers
because this practice pollutes source files.

[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.

Merge branch 'master' into stable

[EGD-3842] Modify events records tests and add providers fields to DB (#1138)

[EDG-4494] Exclude contacts from temporary group (#1109)

* [EDG-4494] Exclude contacts from temporary group

[EGD-4446] Change: new filesystem handling implementation in module db. (#1052)

Due to vfs deprecation there is need to remove all vfs calls from code. This PR covers module database. It also contains minor fixes in module-db.

[EGD-4343] use new settings in ServiceAudio (#997)

* [EGD-4343] ServiceAudio moved to new settings

Merge branch 'master' into stable

[EGD-4553] Notes search engine implemented. (#1112)

[EGD-4487] Application notes implemented. (#1094)

* [EGD-4487] Implementation of notes application.

[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-3572] SettingsTable exchanged to settings::Settings (#968) (#1044)

[EGD-3572] Application has an instance of Settings - removed from derived apps
[EGD-3572] Application is the owner of Settings handling for its windows/widgets
[EGD-3572] Settings header moved to service-db public section