Added Bootstrap and jQuery
Added possibility to store secrects and other stuff

- secrets are currently stored in plain text in a file
Added a window for the settings
Restructured zabbix.js

- don't export a Zabbix class
- export different methods instead
  --> connect, disconnect, retrieveTriggers ...
Added a window for displaying the triggers
Adapted trigger.get call to retrieve also host information

- added the extendData parameter to the method call
- adapted the JSON format of all method calls
Adapted the styling of the triggers

- added colors for all triggers similar to the colors used by Zabbix itself
- added depenency moment for easy date time formating
Adapted trigger.get call to use the trigger filter settings

- renamed 'Common stuff' section to 'Trigger filter'
- added filter for skiping the dependent triggers
- modify the trigger.get call according to the filter settings
Added update interval to settings
Adapted index.html to control the "process-flow"

- if the settings aren't complete the settings window will be opened
- if all settings are given the trigger window will be opened and the
  trigger update will be scheduled