Clarity of current search paramaters

[oganm]

It seems that currently, if one uses a file gene list, clicking reset and providing a list through the text bar, the search is still performed on the file gene list. Ideally file should be removable without refreshing the session

[jsicherm]

Great catch. In the past, I've skirted around R Shiny's poor support (or maybe my lack of understanding of their support) for file uploads by:

1. Changing the fileInput UI element to a uiInput element
2. Dynamically adding the fileInput on application launch in server.R
3. Removing and re-adding a new fileInput on reset button clicked

This has worked for me when "hard" resets are necessary, but you can also probably get around it by having a session variable tracking whether to use the uploaded file or not (setting to FALSE on reset click, and TRUE on upload)