update data after "manual" fixing session in ecology cottage

@rmh24, @Iriskennedy, @CarolineTroy, @krystalbagnaschi
FYI, I redownloaded the data after you've fixed a lot of it.
- The duplicated stem issue will be dealt with separately. see issue #31
- There is still one unjustified dbh=0 that needs to be fixed, see issue #29
- For missed stem, I think we decided that you all will go through the ones that need to be changed to DN (when main stem is DN), the others are just waiting to be sampled (unfinished quadrat). Let me know if I am remembering that wrong.
- I'll address mortality census progress code (question of in progress vs completed, vs potentially new code and/or mortality map) in an new issue.
- There are still a few "CodeAButHOM1.3", I think some have notes that can help fixing the data. we may need to discuss this again.