project owner can update reward description #changelog

rollback to project owner can update reward description when reward
have confirmed backers.
admin can see the history about modifications on reward description #changelog [Fix #45716325]

now admin can see the changes that the project owner make on reward.
task to add the first version of reward on versions

need to run this task after install the versions on reward to index the
first version of the reward on versions.
all green <3 <3 <3