Change dictionary javascript structure used by UI, dicttabs

[jzohrab]

Currently, the dictionaries are given to the UI in a simple array like this (more or less)

[ "http://blah/###", "*http://blarg/###" ]

In issue #330, we'd also need to pass along the nickname, presumably something like this:

[ { url: "http://blah/###", nickname: "d1" }, { url: "*http://blarg/###", nickname: "d2" } ]

So as a prep. move for that, we should change the current dict structure to this:

[ { url: "http://blah/###" }, { url: "*http://blarg/###" } ]

and while doing that, we might as well get rid of that "*" character:

[ { url: "http://blah/###", dicttype: "embedded" }, { url: "http://blarg/###", dicttype: "popup" } ]

Sizing notes:

• change existing dictionary structure returned by route
• check everywhere that the dict struct is used
• change dicttabs.js and stuff to work with existing
• ensure sentence translation works (embedded and popup)
• ensure page translation works (embedded? and popup)
• ensure term dict tabs work

[jzohrab]

This might not be that terrible:

1. make changes to the structure returned by lute/models/language.py, Language.all_dictionaries(cls) and its test test_language_dictionaries_smoke_test in tests/orm/test_Language
2. working through the various pages, fixing js errors.