Related: fdo#82259 all the STIX fonts are really for symbols

Change-Id: Id032f1b643199a57c6fc08ccf580a54ff2370861
Resolves: fdo#82259 use same symbol strategy on all platforms

Change-Id: Ia4f0a36c8a95849b7c8551b930873e912b673537
Related: fdo#82259 OpenSymbol doesn't have 0x2706 or 0x2704 so no preview

Change-Id: I2164cb2c37c7b13759e47561002024fd2bb577f9