Various fixes and improvements regarding Sample Grid

Created by: mguijarr

• add Unselect all button (not sure if it will be kept as-is for the future, but can be useful for now)
• fix for refreshing issue pointed by Frederik
• added sample name to the filtering possibilities (forgot about this one !)
• tags (little blue labels) reflect methods added to a sample via Queue in Grid ; this is the first step towards a more complete feature with color codes for data collection status, link to results etc.

There is also another little fix:

• the "error notification bar" could not be displayed anymore since navbar was set to fixed top, so I made a little trick to be able to have it displayed correctly still - maybe we will get rid of that in the future, meanwhile it is convenient to show some alerts to user sometimes