Improve the Assets management

Merge pull request #2041 from LuckyCyborg/4.0

[4.0] Improve the Assets management

Improve the Assets management and update the Language files

Merge pull request #2040 from LuckyCyborg/4.0

[4.0] Improve the Assets management and update the Language files

Overall improvements

Merge pull request #2039 from LuckyCyborg/4.0

[4.0] Overall improvements

Overall improvements

Merge pull request #2038 from LuckyCyborg/4.0

[4.0] Overall improvements

Update the Russian Language support

Merge pull request #2037 from XTRO123/4.0

[4.x] update the language (RU) for the module Contacts

Overall improvements

Merge pull request #2036 from LuckyCyborg/4.0

[4.0] Improve the Contacts module and Shared\Cache

Improve the Shared\Cache

Merge pull request #2035 from LuckyCyborg/4.0

[4.0] Improve the Shared\Cache

Overall improvements

Merge pull request #2034 from LuckyCyborg/4.0

[4.0] Overall improvements

Improve the Contacts and Users modules

Merge pull request #2033 from LuckyCyborg/4.0

[4.0] Improve the Contacts and Users modules

Implementation of an alternative Cache Files Driver with tagging support

Merge pull request #2032 from LuckyCyborg/4.0

[4.0] Implementation of an alternative Cache Files Driver with tagging support