Setting widget expanded

[eriktks]

Issue

Continuing the work of Flavio Hafner on issue #14 in PR #33 in making a widget that determines the setting of a text

Description of changes to setting widget

• added progress bar
• code refactoring
• replaced lemma output by event+location+date output
• made possible inclusion of additional entities list
• select most frequent of generated three entities
• visualize text analysis
• use additional data from WikiData

Future work (create new issue for this)

• use prepositions that indicate the setting:
  https://e-ans.ivdnt.org/topics/pid/topic-15174778691463560 gives the prepositions of place
  https://e-ans.ivdnt.org/topics/pid/topic-15428093371166213 the propositions of time

Includes

• Code changes
• Tests
• Documentation