1. organize, move operation and operation type out of the editlog; 2. make deleteCompletedLogs non static in editlog
code format
1. re-org json related code; 2. write json image
load flow part 1
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load flow part 2
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done read flow
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element loading bug fix
fix journalling bugs
improve loading logic
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increase the waiting time in journal test
output info
increase the waiting time in journal test
fix unit test
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rename opertion to editlogoperation, element to imageelement
Merge branch 'master' into journal