Support advanced Search Features

[disperate]

Description of problem
When searching for a node it should be possible to have some advanced queering features.

Possible features:

• exclude -> jaguar -car
• must match -> "jaguar"
• author -> author:disperate
• creation & edit date -> created:YYYY-MM-DD (month and day optional)
• place of search -> in:title or in:body
• language of node -> language:french

Solution

Additional context

Criteria for acceptance

• define features
• update user documentation