D-Net

New files for software entity added (forgotten from previous commit)

Software entity added (landing page, search pages, services) | software tab added in project landing page | Software added in navigation bar and in search/find page

Add Guard that checks if a route is enabled | add a dummy service that says which route and which entity is enabled | add checks if entity is ebnabled in search/find, home (numbers), menu

add url encoding to filter values - fixing #3174

Adjust results of search pages to expand when there is no csv or table-view or list-view on the right side or filters on the left side

Align elements of search pages properly for all device sizes | paging added at the bottom of search page table-view and advanced search page

Utils of landing pages moved to 'landing-utils' folder | errorMessages.component created to centralize errorMessages according to ErrorCodes in openaireProperties.ts file | http service returning errorCodes and proper display fixed in search and fetch subscriptions (claims, home component, html project report page, csv files, basic info in landing pages, helper component, staticAutocomplete do not return errorCodes yet) | simple searchPages: paging remains when page changes while results load, filters on the left do not change position according to paging

Direct Linking use the same look and feel with linking | add seperate template files for linking generic and direct linking components | login components redirects in case user is logged in

Add a minifying script fot html files

Add *.component.html files for components with big html template