subreddit info pulls subreddit name using regex

fixes #1921
fixes #1922
Bump to 4.5.4
removeUndefinedUnlessKeyword sanity checks that array exists before sanitizing out "undefined"
Merge pull request #1924 from allthefoxes/bump

Bump to 4.5.4
plist update
subredditInfo: Move definition of srRe
Fix #1926
Merge pull request #1925 from mc10/subreddit-info

subredditInfo: Move definition of srRe
Merge pull request #1928 from matheod/fixvoteWeight

Fix #1926