BrAPI Fields List Overhaul

[trife]

• Modify pagination to scrolling recylcerview- going to the end loads the next page and appends it to the list
• Add search to top toolbar
• Move load fields to top toolbar as an icon
• Combine Filter options to a dialog
• Add year as a filter criteria
• Save/load filters
• Add each filter criteria as a sub-top toolbar with an X to delete that criteria
• Stylize server name (via serverinfo) and add as a sub-top toolbar
• Replace preview field with a bottom banner that only displays once a field has been selected
• Update import dialog to alertdialog style
• Rename options in import dialog to "Cancel" and "Import"
• Move observation level to after field is selected