Additinal CONTAINS_STRING option for characteristic filter

[linupi]

Description

In SciCatProject/backend-v3#680 we propose a filter option for partially matching strings and here we added the corresponding frontend modifications.

Motivation

imagine you'd have the following metadata for a dataset

"scientificMetadata": {
        "localContact": "John Doe",
        "experimentalists": [
                "John Doe",
                "Max Mustermann"
         ]

now we would like to filter all datasts where John participated in the measurement (or was local contact respectivly). So far this type of query was not possible using the options offered when clicking add condition in the search box as there was only an option to exactly match complete strings and no option for partial string matching or matching strings in lists.

Changes:

Tests included/Docs Updated?

• Included for each change/fix?
• Passing? (Merge will not be approved unless this is checked)
• Docs updated?
• New packages used/requires npm install?
• Toggle added for new features?
• Requires update of SciCat backend API?

[coveralls]

Pull Request Test Coverage Report for Build 2472997950

• 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• 5 unchanged lines in 2 files lost coverage.
• Overall coverage decreased (-0.1%) to 73.5%

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Files with Coverage Reduction	New Missed Lines	%
src/app/datasets/dataset-detail/dataset-detail.component.ts	1	80.37%
src/app/jobs/jobs-dashboard/jobs-dashboard.component.ts	4	58.44%

Totals
Change from base Build 2467375133:	-0.1%
Covered Lines:	3582
Relevant Lines:	4473

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💛 - Coveralls

[bpedersen2]

rebase onto current HEAD and created a fresh pull request #1342