Converted GetElementsToBeAligned to an helper class

Goes together with AlignmentOnline!46 (merged)

Used to be a tool. This is a prerequisite to have it as a derived condition and then be able to use DD4hep

changed the description

mentioned in merge request AlignmentOnline!46 (merged)

added lhcb-head-2 label

• [2020-11-28 00:20] Validation started with lhcb-head-2#89
• [2020-11-28 00:30] Validation started with lhcb-dd4hep#705
• [2020-11-29 00:17] Validation started with lhcb-head-2#90
• [2020-11-30 00:16] Validation started with lhcb-dd4hep#706
• [2020-11-30 00:21] Validation started with lhcb-head-2#91
• [2020-12-01 00:12] Validation started with lhcb-dd4hep#707
• [2020-12-01 00:17] Validation started with lhcb-head-2#92
• [2020-12-01 11:01] Validation started with lhcb-head-2#93
• [2020-12-02 00:23] Validation started with lhcb-dd4hep#708
• [2020-12-02 00:32] Validation started with lhcb-head-2#94

added 2 commits

• b424d216 - Converted GetElementsToBeAligned from Tool to helper class
• 97682109 - Fixed formatting

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added 1 commit

• 39c44a21 - Fixed formatting

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merged

mentioned in commit 5507138a

added Conditions modernisation labels

mentioned in merge request !192 (merged)