[Target Identification] Upload target from Excel with custom columns

[mzueva]

Background
It would be helpful to extend target object and genes included into the target.

Approach

Gene custom columns

• Add field type to target [Default, Parasite]
• Target table with genes shall support a arbitrary number of additional columns in addition to default columns (gene, gene id, tax id, species name, priority)
• Server shall provide an API to get list of additional columns for a target
• Server shall provide an API to get genes for a target with paging, sorting and filtering options for all fields

Additional features

• Allow to start identification with genes of interest only
• Import target from Excel (CSV)

[maryvictol]

@AlfiyaRF

Bug:
The list of columns isn't shown in the columns selector menu at the creation of the parasite target.

Steps to reproduce:

1. Create a Target with Parasite type.
2. Upload genes and click Create button.
3. Click the hamburger icon to open the columns selector menu.

Actual result: Only Show filters option is shown in the columns selector menu. The list of columns appears only after reopening the target.

[maryvictol]

@mzueva

Bug:
Problems with Priority column:

1. If uploaded file with Genes contains column Priority with at least one value (Low/High), then an attempt to create parasite Target gives the error cannot change DocValues type from NUMERIC to SORTED for field "Priority".
2. Filter for the Priority column contains number values instead of Low/High
   

[maryvictol]

@AlfiyaRF

Bug:
It's impossible to remove any gene from Genes table.

To reproduce: Open any Parasite Target >> Click Remove button for several genes >> Click Save button
Actual result: Table is refreshed after saving. All removed genes are returned to the table.