List and remove deprecated and or abandonware dependecies

[samcarecho]

One of the initial tasks must be the removal of deprecated and abandonware dependencies.
Cleaning the project will open the road for the update to Polymer 2.

The dropping of dependencies will create the need to refactor the Theme.
A "substitution" issue will be open for each dropped dependency.

[samcarecho]

List of dropped dependencies

(grouped by replacement or reason)

app-layout (rep)

• paper-drawer-panel
• paper-scroll-header-panel
• paper-menu
• paper-toolbar

paper-styles (rep)

• paper-material

Web Animations API or CSS animations (rep)

• neon-animation

Abandonware (rea)

• fontawesome-iconset

[jtebert]

It also looks like the paper-card element (replacement for paper-material) has better support for proper implementation of the material design specification for cards. This means it's probably possible to get rid of the entire existing custom x-card element.