Update some minicore menus

* Adds slot checked/selected gfx
* Adds gold icon
* Updates various widget positions in config/inventory/actionbar menus
Merge pull request #327 from dorkster/fixes

Update some minicore menus
Add desktop file and svg icon
Merge pull request #330 from dorkster/fixes

Add desktop file and svg icon
Added simple setup steps
Add detailed Linux build/install instructions to README
Change "Installation" to "Building and Running" in README

The instructionsaren't limited to system-wide installation.
Merge pull request #333 from dorkster/docs

Add detailed Linux build/install instructions to README
Reordered Powers menu text for more intuitive keyboard nav
No visual changes
Add weapon_type keys to fantasycore and alpha_demo items
Replace weapon_type with equip_flags

In addition, the Block power now requires an equipped shield to be used.
Added MAP_ONLY tiles to tiled_collision.png
Changed animation names so that custom animations will work without affecting sfx
Changed ment/melee/ranged to cast/swing/shoot
Merge pull request #340 from makrohn/extratiles

Added MAP_ONLY tiles to tiled_collision.png to implement https://github.com/clintbellanger/flare-engine/issues/721
Updated Necromancer and other animation files
Merge pull request #341 from makrohn/testcustom

Custom Animation stance-name revision.
Add fantasycore/engine/equip_flags.txt

This file defines printable names for equip flags. These are used when
displaying "Requires a _______" text in power tooltips.
Merge pull request #339 from dorkster/weapon_type

Add equip_flags keys to fantasycore and alpha_demo items
Update engine/elements.txt for fantasycore