D-Net

1. env-properties.json: 'baseOpenaireLink' field added for base link of OpenAIRE portal.
2. remove-projects.component.ts: 'communityUrl' variable added to build url for community portal, as soon as the communityId changes.
3. remove-projects.component.ts: do not set status of searchUtils to NONE, to avoid 2 messages about no results....

1. add-projects.component: Links to project landing pages of OpenAIRE portal added.
2. remove-projects.component: Links to project landing pages of community portal added.
3. remove-projects.component: Modal to confirm removal of a project from the community added....

Remove missed counter for subject

Fix error in managers and subjects fields

1. domain/page.ts: 'connect' and 'openaire' fields added in Page.
2. 'connect' and 'openaire' fields added in Page Form (both default to true).

Fix adding undefined, empty managers and subjects in backend

layout changes | hide create/ edit/delete buttons from simple users | apply changes in functions from Session class

1. pages.component: check if 'pages' is null before calling foreach function.
2. add-projects.component: save id for the added project returned by post request, to undo the addition if wanted.
3. remove-projects.component: use custom paging.
4. remove-projects.component: use custom search form in datatable....

almost finished statistics page

Change css for reset button