Add images to Favorite panel commands

[Evgeny Kralko]

• hide text when IsExpanded = false
• ability to draw own vector images (C# Drawing class), using svg to Drawing converter

[Dmitry Kasatsky]

ref #123 image support in CommandDefinition

→ <<cset 541fe5d2d704>>

[Dmitry Kasatsky]

ref #123, try to xaml image bind

→ <<cset a2881b180e60>>

[Dmitry Kasatsky]

ref #123, vector icons added to some commands

→ <<cset 8065634ca850>>

[Dmitry Kasatsky]

ref #123, some svg icon source added

→ <<cset 48b968bf248a>>

[Dmitry Kasatsky]

ref #123, some svg icon source added

→ <<cset 9e2006bd33a8>>

[Dmitry Kasatsky]

ref #123, all command icons source svg added

→ <<cset 1a1d58994fd0>>

[Dmitry Kasatsky]

ref #123, command DrawingImage icons added and utilized

→ <<cset 7162de3deed6>>

[Dmitry Kasatsky]

ref #123, command Commit fixed

→ <<cset 8d8edded2875>>

[Dmitry Kasatsky]

ref #123, favorite panel foreground color used in icons

→ <<cset 7e50839fd4d7>>

[Dmitry Kasatsky]

ref #123, some command icons are redrawn

→ <<cset 64e7bcf25e79>>

[Dmitry Kasatsky]

ref #123, vector command icon renamed from .xaml to .icon

→ <<cset 71a9e82dcc7f>>

[Dmitry Kasatsky]

ref #123, icons added to static commands (donate, about)

→ <<cset adaebbf49726>>

[Dmitry Kasatsky]

ref #123, favorite expander removed

→ <<cset 98442faa4ca7>>

[Dmitry Kasatsky]

ref #123, xaml hardcoded values extracted to resources

→ <<cset 60872a352ee6>>

[Dmitry Kasatsky]

ref #123, Command names visibility toggling implemented

→ <<cset b792cf07d3fb>>

[Dmitry Kasatsky]

ref #123, toggle button border fixed

→ <<cset 968da998ffe3>>

[Dmitry Kasatsky]

ref #123, command button tooltip improved

→ <<cset 967f798a3cab>>

[Dmitry Kasatsky]

fix #123, new icons added

→ <<cset 3fa8feecd11f>>