Angular eg-grid component

• Defining the persistKey and adding the workstation setting SQL for saving grid settings
• Choosing the data source and setting up GridDataSource.getRows()
  • Fleshing linked fields
    • Handling linked fields using CStore when PCRUD is not available (i.e. org unit settings)
  • Joining tables via PCRUD ops
  • Prepending data (see Acquisitions line item search)
• Filtering
• Sorting

• Automatic columns from IDL fields
• Renaming columns
• Hiding IDL columns
• Defining grid cell templates and text generators for columns

• Styles based on column names and data types (WIP)
• Grid cell templates tutorial
  • Note that (click) actions in grid cells' child buttons should call $event.preventDefault() and $event.stopPropagation to prevent the row selection event from firing
• Grid cell text generator – setting up print templates for custom grid cell templates that contain links and buttons

• Filters button (always leftmost)
• Button colors and (TK) button style directive
• Template areas before and after each button (primarily for input groups)
• Grouping actions
  • Note that toolbar buttons could be grouped into dropdowns in AngularJS, but this has never been implemented in Angular
• Right-click context menus
• Double-click row actions
• $event and context.getSelectedRows()
• Special instructions for file download buttons

• (new in 3.14) See .eg-grid-filter-links in staff/share/buckets/record-bucket.component.html and getViewKeys() in staff/share/buckets/record-bucket.component.ts
• Constructing URLs to filtered grid views

TODO: explanation of flexbox in AngularJS vs. tables in Angular; see Bug #1615781