Update `cli_getConfigLines.sh':
    
        - Remove verification related to section name. This imposses a
          limit in the amount of section names configuration files might
          have. Don't restrict such thing here, do it when you process the
          configuration lines instead using the following construction:
    
          BRANDING_CONF_VALUES=$(\
              for BRANDING_CONF_SECTION in $(echo "sectionName1 sectionName2 ...");do
                  cli_getConfigValue "${BRANDING_CONF_FILE}" "${BRANDING_CONF_SECTION}" "${BRANDING_CONF_VARNAME}"
              done)
    
        - Rectify verification related to variable name.
    
        - Rename variable name from MANUAL_CONFIG_FILE to CONFIG_ABSPATH.
          The MANUAL_CONFIG_FILE variable isn't defined in this function,
          so it outputs an empty value and with it makes `cat' to wait for
          an input. To prevent this, use the correct variable name
          definition (i.e., CONFIG_ABSPATH).
    
        - Force the value stored in CONFIG_VARNAME to start at the
          beginning of line when looked up inside CONFIG_ABSPATH. Only
          those values that match will be returned.