Closes #3302 Fix "Internal server error on "SigUp" page with english language set. (#3303)

Co-authored-by: lbownik <lbownik@icm.edu.pl>

Author: lbownik

fairchive-webapp/src/main/resources/messages_en.properties

@@ -0,0 +1,26 @@
+primefaces.captcha.INVALID = {0}: Validation error: Improper value.
+primefaces.captcha.INVALID_detail = {0}: ''{1}'' value does not conform to displayed text.
+primefaces.password.INVALID_MATCH = {0}: Validation error.
+primefaces.password.INVALID_MATCH_detail = {0} needs to be equal to {1}.
+primefaces.tree.REQUIRED = {0}: Validation error.
+primefaces.tree.REQUIRED_detail = Checkmark is required.
+primefaces.datatable.aria.FILTER_BY = Filter by column values {0}
+primefaces.paginator.aria.HEADER = Paging
+primefaces.paginator.aria.FIRST_PAGE = First page
+primefaces.paginator.aria.PREVIOUS_PAGE = Previous page
+primefaces.paginator.aria.NEXT_PAGE = Next page
+primefaces.paginator.aria.LAST_PAGE = Last page
+primefaces.paginator.aria.ROWS_PER_PAGE = Rows per page
+primefaces.datatable.aria.HEADER_CHECKBOX_ALL = Check all
+primefaces.dialog.aria.CLOSE = Close
+primefaces.rowtoggler.aria.ROW_TOGGLER = Toggle row visibility
+primefaces.datatable.SORT_LABEL = Sort
+primefaces.datatable.SORT_ASC = Ascending
+primefaces.datatable.SORT_DESC = Descending
+primefaces.rowgrouptoggler.aria.ROW_GROUP_TOGGLER = Toggle row group visibility
+primefaces.slider.OUT_OF_RANGE = Validation error: Value out of range.
+primefaces.calendar.OUT_OF_RANGE = Validation error: Value out of range.
+primefaces.calendar.INVALID = Validation error: Improper value.
+primefaces.calendar.DATE_INVALID_RANGE_MESSAGE_ID = Validation error: Being date is later than end date.
+primefaces.panel.aria.TOGGLE = Toggle panel visibility
+primefaces.panel.aria.OPTIONS_MENU = Toggle menu visibility