[common-assets & openaire-theme & Library | new-theme]: Updated class for graph color and moved to openaire.css | z-index fixes in dropdown and in landing pages.

1. dropdown.css: [Bug fix] Added z-index: 1 in uk-dropdown to prevent dropdown from being on top of menu.
2. text.css: Removed classes "text-orcid" and "text-argos" (moved to openaire-theme/css/openaire.css.
3. openaire.css: Removed class "graph" and added "text-graph", "text-orcid", "text-argos".
4. dataProvider.component.html & organization.component.html & project.component.html & resultLanding.component.html & newSearchPage.component.html: Use class "text-graph" instead of "graph" for graph color.
5. landing-utils.css: [Bug fix] Updated z-index of #graph_and_feedback to 980 (previous 979) to be on top of tabs in landing pages | background of #main-tabs-div was set twice.

css/openaire.css

@@ -1,8 +1,12 @@
 /* Overrides common to all dashboards*/
-.graph {
-  --text-primary-color: var(--graph-color);
+.text-graph {
+  color: var(--graph-color) !important;
 }
 
-.graph a, a.graph {
-  color: var(--graph-color);
+.text-orcid {
+  color: var(--orcid-color) !important;
 }
+
+.text-argos {
+  color: var(--argos-color) !important;
+}

css/structure/dropdown.css

@@ -0,0 +1,3 @@
+.uk-dropdown {
+  z-index: 1;
+}

css/structure/text.css

@@ -25,11 +25,3 @@
 .uk-text-xsmall {
   font-size: 12px;
 }
-
-.text-orcid {
-  color: var(--orcid-color);
-}
-
-.text-argos {
-  color: var(--argos-color);
-}