Invalid regular expression for validation layout output filename mask.

[Roman Telezhynskyi]

Currently used regex doesn't represent correct filename schema. It should not forbid legal characters. Most critical for users who use Valentina from command line.

[Roman Telezhynskyi]

Fixed issue #805. Invalid regular expression for validation layout output filename mask.

→ <<cset eca61caae239>>

[Roman Telezhynskyi]

Fixed issue #805. Invalid regular expression for validation layout output filename mask. (grafted from eca61caae23937baffec715a2dff88e915dcc302)

→ <<cset 83e4f66dc1e2>>

[Roman Telezhynskyi]

Removing milestone: v0.5.1 (automated comment)