(Redmine issue: #5832)

(Redmine issue: #3387)

* Implemented brnad new PassiveDNS data service and pluggable module for Hawat.
* Implemented support for HTML snippet endpoints.
* Implemented basic framework for asynchronous fetching additional data for IP addresses in IDEA event detail view.
* Implemented fetching of additional data for IP addresses.

(Redmine issue: #5278)

New mechanism for building Debian packages makes better use of debhelper. Previous solution with using Grunt for building the package was abandoned entirely. (Redmine issue: #3387,#4216)

(Redmine issue: #3387)

(Redmine issue: #3387)

(Redmine issue: #3387)

The timeline chart dataset tables now have localized header titles and numbers in the table are localized with Globalize. (Redmine issue: #4321)

(Redmine issue: #3387)

(Redmine issue: #3387)

(Redmine issue: #3387)

(Redmine issue: #3387)

(Redmine issue: #3387)

(Redmine issue: #3387)

(Redmine issue: #3387)

(Redmine issue: #3387)

(Redmine issue: #3387)

(Redmine issue: #3387)

(Redmine issue: #3387)

(Redmine issue: #3387)

(Redmine issue: #3387)

(Redmine issue: #3387)

This commit marks the first production release of Mentat system 2.0.0. After lots of work we have finally successfully abandoned the original implementation written in Perl and using MongoDB as database backend.

This commit also marks the end of an era of frantic coding. Until now some of the guidelines and best practices for coding and committing were violated in favor of faster development. This was also possible thanks to the fact that there was mostly only single developer working on the project, so there were no possible conflicts. From now on however things will be back to normal state.

(Redmine issue: #3387)

(Redmine issue: #3387)

(Redmine issue: #3387)

(Redmine issue: #3387)

(Redmine issue: #3387)

(Redmine issue: #3387)

(Redmine issue: #3387)

(Redmine issue: #3387)

(Redmine issue: #3387)

(Redmine issue: #3387)

(Redmine issue: #3387)

This patch introduces huge amount of work related to Hawat web interface. I was just clicking through the interface and trying to improve everything that popped out at the moment. There are following improvements:

* Enabled DataTable localication plugins.
* Implemented common layout for object management views (list views).
* Redesigned application menu implementation.
* Enhanced application menu to support contextual item action menus in listing tables. All administration list views now use it to generate contextual action toolbars.
* Menu object is now used even to generate breadcrumb menus.
* Simplified working with view icons and their propagation into action menus.
* Implemented AJAX spinner and used AJAX to fetch raw report data to web interface. There is stil a lot of room for improvements, the idea is for the user to be able to inteligently browse through the loaded data in some way.
* Redesigned object administration views (users, groups, filters, networks).
* Cleaned up list of built-in icons.
* Improved web interface translations after the changes in this commit.
* Fixed the bug in serving report data files.

(Redmine issue: #3734,#3443)

(Redmine issue: #3387)

(Redmine issue: #3387)

(Redmine issue: #3387)

(Redmine issue: #3387)

(Redmine issue: #3387)

(Redmine issue: #3387)