make url for keyword link on data package page relative

updated stylesheet DryadItemSummary.xsl to make the keyword
term link relative to the current host, instead of the prod
server
ini alreadyresister class
change sitemap and add alreadyregister class
Remove unneeded file
Improve comments in header
Merge pull request #678 from rnathanday/yonghaoy-keyword-169

trello-169: add hyperlink for keyword to search by subject
add hyperlink for keyword to search by subject
add link to each keyword term

Modified yonghaoy's commit to add a separate link to each keyword term,
per the feature request, instead of a single link spanning all terms.
updated xsl for changeset
make url for keyword link on data package page relative

updated stylesheet DryadItemSummary.xsl to make the keyword
term link relative to the current host, instead of the prod
server
Merge remote-tracking branch 'upstream/dryad-master' into dryad-master
Merge pull request #681 from ryscher/dryad-master

Update of Register email 190. I'm merging my own pull request here, because it's Yonghao's code that I reviewed. All I did was add some comments.
Added Royal Society Open Science
Adding Royal Society Open Science
Merge pull request #682 from jamie-dryad/patch-15

Added Royal Society Open Science
Merge pull request #683 from jamie-dryad/patch-16

Adding Royal Society Open Science
Configure travis to notify slack

Encrypted slack token with travis CLI
changed Ecology folder name to ecol
Merge pull request #684 from dleehr/travis-slack

Configure travis to notify slack
Merge pull request #685 from jamie-dryad/patch-17

changed Ecology folder name to ecol