Add debugger gem.
Fix XSS in fetch source data javascript.
Link to artist entries for taken artist names.

In artist entries, there is a Check link next to the name field that
lets you check whether the name is already taken. When the name /is/
taken, you often want to check the other artist entries to see if
you're creating a duplicate. This adds links to the other entries so you
can check them more easily.
Add test case for rewriting ugoira URLs.
Save normalized source with post instead of original source.

Fixes #2294.
Merge pull request #2295 from evazion/fix-source-rewriting

Possible fix for #2294
Merge pull request #2297 from evazion/feat-artist-check

Link to artist entries when artist name is taken.
Merge pull request #2296 from evazion/fix-js-xss

Fix XSS in fetch source data javascript.
Fix server field not getting set for uploads
remove unused file
fixes #2299
fixes #2301
Delete empty file
Hide pending border on mod queue
fixes #2014
Exempt deletions from dupe flag checking
fixes #2121
make sure to delete tempfiles
fixes #2300
new version