update CONTENTdm links used in posts

[evanwill]

Need to replace all instances containing the urls https://digital.lib.uidaho.edu or https://cdm17254.contentdm.oclc.org.
Most of the occurrences of these links is in old posts migrated from Tumblr. There is only about 50 posts to fix--so not impossibly large!
It requires a bit of detective work to figure out what it is supposed to be linking to--in most cases you replace a pair of links, one to the old CONTENTdm item page with the link to new Item page, and one to the old CONTENTdm image api with new image location on libobjects. In some cases the Item page is correct, but the CDM image links just need to be updated.

Steps:

• pull to update project locally
• go to search pane
• in "files in include" type _posts/*
• in search box paste one of the URLs above
• visit each post and replace the links with appropriate updated links (this may involve updating image links and links to Item pages)

[evanwill]

I did a few of these, not too hard!

[kxuidaho]

Done, got all the links sorted out!