Resolve #3479219 "Replace installercontrollers tempstore"

Closes #3479219

added 4 commits

• 818da831...ae255f91 - 3 commits from branch project:2.0.x
• 029f3915 - Merge branch project_browser:2.0.x into 3479219-replace-installercontrollers-tempstore

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added 2 commits

• ca3ee8ab - phpcs
• 20fa671e - Merge branch '3479219-replace-installercontrollers-tempstore' of...

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added 5 commits

• 1665ae37 - Some feedback addressed
• 9d33a676 - Code reverted for assertInstallInProgress
• 779854c6 - getLastUpdatedTime method added
• 8503a3c1 - class made final
• 0b6aaacb - Some description added/updated

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added 2 commits

• 00c40a7f - Removed unused tempstore
• d3893fff - Tempstore removed from test and controller

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added 1 commit

• f963404f - PHPCS

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added 27 commits

• f963404f...4c547544 - 14 commits from branch project:2.0.x
• 4c547544...21d435db - 3 earlier commits
• 4f443ffd - Unused use statement removed
• 7f72df22 - phpcs
• 6fbe68d8 - Some feedback addressed
• 1a65f816 - Code reverted for assertInstallInProgress
• ee68cd99 - getLastUpdatedTime method added
• 0e41f5cd - class made final
• 4899dd48 - Some description added/updated
• 530a81da - Removed unused tempstore
• 58ab35d3 - Tempstore removed from test and controller
• 985d21ef - PHPCS

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added 1 commit

• 3f559bbc - key value store used

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resolved all threads

added 1 commit

• e2f4f3c2 - Docblock updated

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added 1 commit

• 7b1f92b7 - Apply 7 suggestion(s) to 3 file(s)

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resolved all threads

added 1 commit

• 1ef044db - Feedback addressed

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added 1 commit

• 22b2adc6 - missing use statement

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added 1 commit

• 5d681dff - Apply 4 suggestion(s) to 3 file(s)

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added 1 commit

• 76e5219c - TimeInterface used

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resolved all threads

added 27 commits

• 76e5219c...5284ee04 - 7 commits from branch project:2.0.x
• 5284ee04...a61ac33c - 10 earlier commits
• 2afa61cc - Removed unused tempstore
• 4114ac5a - Tempstore removed from test and controller
• edee6cd6 - PHPCS
• 61898799 - key value store used
• 1b274e1e - Docblock updated
• d1795574 - Apply 7 suggestion(s) to 3 file(s)
• 786f0f3c - Feedback addressed
• 774f61c7 - missing use statement
• 46bd9140 - Apply 4 suggestion(s) to 3 file(s)
• 671fe887 - TimeInterface used

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merged