Fixing tag submission

these broke with the addition of clickable tags because the DOM changed.
This version should be slightly more resistant against such breakages.
fixes #637
Merge pull request #639 from Japan-Digital-Archives/frontpagefixes

fixes #625, fixes #620, fixes #552
added support for twitter
Merge pull request #641 from jessyurko/jessica

added support for twitter
Merge pull request #642 from Japan-Digital-Archives/frontpagefixes

tumblr logo added
switched outside- tag on metadata to layer_type from media_type
Merge pull request #644 from jessyurko/jessica

switched outside- tag on metadata to layer_type from media_type
added japanese translation for 'translate this'

fixes #571
added retweet filter

using the new exlude API, retweet filter adds an exclude for things with
"RT" in them. fixes #629
moved retweet to right
added layer_type information to admin panel
Merge pull request #647 from ebensing/translations

added japanese translation for 'translate this'
Merge pull request #649 from ebensing/admin

added layer_type information to admin panel
added tag input
Revert "added tag input"

This reverts commit 523824b19bc62501f9bca4773425bf30d0b5169e.
added tag input
added tag input
Merge pull request #652 from jessyurko/jessica

added tag input field to bookmarklet
Merge pull request #648 from ebensing/retweet

added retweet filter
fixing translations for dropdown