..pvmanager.graphene: adding null checks for ScatterPlotFunction

Change-Id: I5c1805eaa743334a4c134d7599ced0a89afa46ef
Signed-off-by: Kunal Shroff <shroffk@bnl.gov>
..graphe: adding scatter plot as a boy widget

Change-Id: Ia97210dbc3b70fcc7ef9e802dea7d85860abcb0b
Signed-off-by: Kunal Shroff <shroffk@bnl.gov>
..graphene: adding both X and Y pv to momento

Change-Id: I069ee9e152de6b04b8d353c3bbc615e45babd05a
Signed-off-by: Kunal Shroff <shroffk@bnl.gov>
..graphene: adding selection to the scatter plot

Change-Id: I30050726afd09ed4e719563a14df1bf02ce87ab4
Signed-off-by: Kunal Shroff <shroffk@bnl.gov>
..graphene: setting the scatter plot as a the selection provider in the
view

Change-Id: I74e0a4bdd017cdc9ecd537d803880b1db2b73e8d
Signed-off-by: Kunal Shroff <shroffk@bnl.gov>
..graphene: adding configuration support to scatter plot

Change-Id: I1b18a5bc494e97245c51dd7b80fa909397a6c6f2
Signed-off-by: Kunal Shroff <shroffk@bnl.gov>
..graphene: rearranging the panel to match the scatter config panel,
both are exactly same and should be refactored into one

Change-Id: Ie58da8f1b2d67af53437919a33c96d89341e5511
Signed-off-by: Kunal Shroff <shroffk@bnl.gov>
..graphene: fixing bug in interpolation

Change-Id: I85145b525d41eaa68780686bb1e6d83f32a1e4f9
Signed-off-by: Kunal Shroff <shroffk@bnl.gov>
..graphene: adding a temporary icon for the scatterplot

Change-Id: Idbb53b084da7a87bc60965ea3cd15c3f55cab0f9
Signed-off-by: Kunal Shroff <shroffk@bnl.gov>