Added a script to send requests directly to the RB storage

RESTBase depends on its storage component (restbase-cassandra) and uses
it internally. However, there is no way for the user to interact with it
directly. This script fills the gap by using the same mechanisms as the
test scripts. Concretely, it constructs a router able to translate URLs
(as would be gotten from RESTBase) to storage back-end method calls. The
user must provide the path to route the request to, and may additionally
provide the request method and body.
Direct request: Added possibility to load data from a file
Minor: Add the scripts/ dir to the JSHint ignore file
Merge remote-tracking branch 'upstream/master'
Merge branch 'master' into feature/direct-req
Added better input data parsing and evaluation

Do not blindly assume the JSON is well-formed. Instead, catch any errors
during the parse and try to eval() the input data. While this seems like
a risky move to make, it gives us greater flexibility on the command
line. Ultimately, the user is responsible for the code they are
executing, and therefore it makes sense to 'let them do what they want'.
Furthermore, direct-request-js is more of a dev script and should not be
used in production unless really needed.
Minor: Added the tidFromDate() function from test/index.js

This allows users to convert time stamps for requests directly from the
command line, without the need to resort to other sources for finding
out the tid.
Minor fix: use parse_data() instead of JSON.parse()
Use the tidFromDate() function from lib/dbutils.js
Minor: Remove tidFromDate() completely

The function is available in lib/dbutils.js which is imported in the
script, so users can access it by using dbu.tidFromDate()
Test Script: Remove the duplicate definition of tidFromDate()

The function definition has been copied from lib/utils.js , so in order
not to have duplicated code, import the dbutils module and use the
aforementioned function directly.
Merge pull request #44 from d00rman/feature/direct-req

Feature/direct req