[TOB-127] feat: Add components to display statement details

* Add back end calls for statement details
* Add component to display general statement information
* Add component to display geographic position
* Add component to display contribution status
* Add component to display statements inbox attachments
* Add component to display statements outbox attachments
* Add component to display linked statements
* Integrate details components in details page
* Integrate details components in form components
* Refresh process history on task change

[TOB-21] feat: Add functionality to manually redispatch statement email

* Add back end calls to redispatch statement email
* Add store actions and effect for redispatching statement email
* Integrate store into statement details page

[TOB-406] feat: Add statement search

* Extend back end API interface for search parameters
* Add component for search filters
* Add sorting buttons to statement table component
* Integrate statement search into search page

[TOB-74] feat: Add map to position search page

* Reorganize routing of search subpages
* Add directive to display leaflet popups
* Integrate leaflet map, markers and popups into position search page

[TOB-315] feat: Add search functionality to position search page

* Add back end calls for position search
* Add store effect for position search
* Integrate search component and store into position search page

[TOB-52] feat: Add GIS call to leaflet map

* Reorganize website configuration to separate config file
* Add back end calls to transform geographic positions
* Add store module for leaflet map
* Add store effecto to open GIS
* Integrate store module into map components
* Match leaflet styling to openk theme

[TOB-92] feat: Add upload functionality for consideration attachments

* Add component to display and upload consideration attachments
* Integrate component into details page

[TOB-354] feat: Add dockerfiles

[TOB-391] fix: Fix minor bugs

* Cancel rerouting of email when leaving mail page
* Prevent refetching of deleted emails
* Properly reset error messages in side menu
* Also perform contact search in new statement page when no mailid is provided
* Close drop downs on scroll
* Fix minor styling issues

Signed-off-by: Christopher Keim <keim@develop-group.de>