Fix & extend add reagent verb (#4954)

* AddReagentWindow

* addReagent command

* functional UI

* fix networking

* add comments & docstrings

* Remove unecesary system

* cleanup & close-eui

* tweak default window size

* fix EUI closing error

* fix merge issues

* fix merge

Resources/Locale/en-US/administration/ui/manage-solutions/add-reagent.ftl

@@ -0,0 +1,5 @@
+admin-add-reagent-window-title = Add to {$solution}
+admin-add-reagent-window-amount-label = Quantity:
+admin-add-reagent-window-search-placeholder = Filter...
+admin-add-reagent-window-add = Add {$quantity}u {$reagent}
+admin-add-reagent-window-add-invalid-reagent = Select a Reagent

Resources/Locale/en-US/administration/ui/manage-solutions/manage-solutions.ftl

@@ -0,0 +1,4 @@
+admin-solutions-window-title = Solution Editor - {$targetName}
+admin-solutions-window-solution-label = Target solution:
+admin-solutions-window-add-new-button = Add new reagent
+admin-solutions-window-capacity-label = Capacity {$currentVolume}/{$maxVolume}u