easier filtering of jobs for exclusion

[ejwillemse]

Using a traditional site name filter for easier selection of jobs for filtering:

Extreme use-case:

• https://blog.streamlit.io/auto-generate-a-dataframe-filtering-ui-in-streamlit-with-filter_dataframe/
• https://blog.streamlit.io/make-dynamic-filters-in-streamlit-and-show-their-effects-on-the-original-dataset/

Simple use-case:

• just have a category select box, and manually filter and display accordingly

Done here:

• https://github.com/WasteLabs/app_ad_thailand_logistics_analyser/issues/2