display_content_plugin: Add needed fields for edit display_content block

Signed-off-by: Marcos Ramos <ms.ramos@outlook.com>
Signed-off-by: Arthur Del Esposte <arthurmde@yahoo.com.br>
Signed-off-by: Gabriela Navarro <navarro1703@gmail.com>
Signed-off-by: Tales Martins <tales.martins@gmail.com>
display_content_plugin: Display events in Display Content Block

Signed-off-by: Arthur Del Esposte <arthurmde@yahoo.com.br>
Signed-off-by: Gabriela Navarro <navarro1703@gmail.com>
display_content_plugin: Organizing content by date.

Signed-off-by: Gabriela Navarro <navarro1703@gmail.com>
Signed-off-by: Arthur Del Esposte <arthurmde@yahoo.com.br>
display_content_plugin: Add "Show blog picture" checkbox
display_content_plugin: Add "view all" option to Display Content Block.

Signed-off-by: Gabriela Navarro <navarro1703@gmail.com>
Signed-off-by: Tales Martins <tales.martins@gmail.com>
Signed-off-by: Marcos Ramos <ms.ramos@outlook.com>
Signed-off-by: Valessio Brito <contato@valessiobrito.com>
display_content_plugin: Add Cucumber tests for Display Content Plugin

Signed-off-by: Arthur Del Esposte <arthurmde@yahoo.com.br>
Signed-off-by: Gabriela Navarro <navarro1703@gmail.com>
Signed-off-by: Daniel Bucher <daniel.bucher88@gmail.com>
Signed-off-by: Luiz Matos <luizff.matos@gmail.com>
Signed-off-by: Carlos Andre <carlos.andre.souza@msn.com>