Task manager implemented

Sprint 2 work finished (#24)

* updates to test suite to handle Material Table

* Added table elements to display total time spent on a task. Fixed coupling in tests for TimerService

* created time transform pipe

* added pipe to test fixtures

* refactoring duplicate variables

* Sonar config (#21)

* added sonar project config to travis

* updated travis for sonarcloud

* updated filename

* updated project properties and build script

* updated cibuild parameters

* file updates

* Updated packages, new icons. Added Task SBM to doc

* added new html structure, icons to the tasks

* fixed failing tests due to inclusion of FA icons

* refactored unite tests per suggestions from stackoverflow

* Added ActiveTask to task service and unit tests

* added active task controls (#23)

* Fixed issues arised during Sonarcloud scan