D-Net

[Trunk|Connect]: Communities Search Page: delete query changed function.

[Trunk|Library]: Use scroll function from 'HelperFunctions' class (utils folder).

[Trunk|Connect]: 1. SearchCommunities: change getSubscribe method. 2. replace scroll with new helper function. 3. SubscribeModule: add forRoot for service

[Trunk|Admin]: Use scroll function from 'HelperFunctions' class (openaireLibrary/utils).

[Trunk|Library]: create class HelperFunctions in utils folder, where static scroll function is placed.

[Newlinking|Library]

Linking:
        add new components to preview claim Entity metadata (used in basket, metadata review and results to add components)
        Initial implemantation of direct linking:
            use generic component, let in direct linking only checks for the parameters and the inputs...

[Trunk|Admin]:
1. app.component: use CommunitiesService with subject functionality (updateCommunities() & getCommunitiesState()).
2. wellcome.component: Change message & if user logged in, show communities he manages.

[Trunk|Admin]: change classes of remove/add buttons:
'remove red_background_color red_color' --> 'remove uk-button-danger'
'add green_background_color green_color' --> 'add uk-button-primary'

[Trunk|Connect]: connect-custom.css: Comment css for class 'my-tooltip' (opacity: 0)

[Trunk|Connect]:
1. community/community.component.html: rephrase in subjects 'show more' to 'show all'
2. community-creation-instructions.component: Open and close instructions in pages according to scrolling position.