Updates to implement finish, process MultiSmartData for v1.2 (Mobile) SmartData and MultiValue workflow support.

A search API has been created.
The Backend and the SmartAPI has been modified to support the search functionalities.
A search recieves a series as a parameter, one that do not necessarily specifies a unit. Similar to a workflow, a search type is defined per domain. Moreover, a 'options' parameter is also expected, specifying which type of search will be performed. If options is not presented, search of index 0 will be executed.
A search returns a multi-unit series, ordered by timestamp.

An example for tutorial domain is provided, where through search0 anomalous temperature values are detected in the space-time range specified by the series parameter.

Reorganizing the repo structure to match the plan. Apparently, git filter-branch was not necessary to remove certificate's private key because someone had already run it. At least, git log --diff-filter=D --summary | grep delete does not show any private key.

Removing print used for tests. This can cause errors to the workflow output recognition by the API.

Removing private workflows.

This should be on a private repository.

Removing junk files: old code files, python cache files, log folders.

A whole response json can be too large to be handled as an argument to a workflow call. Thus we decided to inform the parameters with a buffer file to be read by the workflow.
Also, as previously discussed, the series workflow is not used as a filter during data querying. It is used to process the data before responding to the client.

Backend now controls workflow daemon execution;
Workflows are placed directly on /smartdata/bin/;
Workflow names are inN and outN for input and output workflows, respectively;
S-curve workflow (in3) added to aqtech domain;
Workflows are able to make notifications via the returned JSON.