COUCHDB-2233 - Correct HTML interpolation instances in documents.

Further updating instances of <%= and to <%- within documents to correctly handle HTML interpolation.

Tested for regression in
- 34.0.1847.131
- Safari 7.0.2

Signed-off-by: Alexander Shorin <kxepal@apache.org>
Fauxton: do not underline help icons on hover

Addtionally, use <%- where no <%= is needed
Remove doubled event.preventDefault call
Fauxton: Configurable escaping of notifications

Sometimes we are passing static html-links to the notification-
helper. With the new setting `escape: false` the escaping for
the notifications can be disabled.

The default value is that all values are escaped, as long as
no value with `false` is passed for the option escape.
`undefined` and other falsy values will not unescape.

I updated all occurences where we are passing html to the
notifications, and added a comment, that people are careful, when
the passed message changes to e.g. a dynamic content generated
from users.
Fauxton: fix sorting for tasks on click

there is no node property, but a target, source or database
depending on the task
Fauxton: use .listenTo and not .on

There was no `.off` call on destroy, so these two Eventhandlers
where leaking memory
Fauxton: Extract a common filter component from logs

Create a reusable component from the filter that is used in logs,
that can be used in for tasks like
COUCHDB-2158 ("Apply filter with custom params on changes feed page")
and other situtations where a filter is needed.
Fauxton: fix regression for document editor

Introduced with ebade0f2f82d4da60e386f4aeaf24ecb98181e81
Fauxton: fix loading of pouch

Added a red test which turned green
Fauxton: reformat code & remove whitespace
Fauxton: refactor ActiveTasks

- do not use a model as a collection, directly operate on the
  collection which gets filtered for the view
- remove the view which acted as layer to fetch collections from
  the model and passed it to a view
- remove not used html-template
- format code
Fauxton: do not load unnessecary d3 & backbone