Merge pull request #1254 from ChuckDaniels87/master

Hedgewars, King Arthur's Gold, Paraview and Gmsh icon added.
Latexila own new icon, no symlink.
Latexila icon fixes: size, aligned to the grid and gradient reduction.
Latexila icon fix: no strokes.
Fixes #1016. Fixes #1193. Fixes #986. Fixes #1095.
Some game icons.
Gradient L=105-115
Gtick icon.
Hugin icons (hugin & ptbatcher)
Merge pull request #1268 from ChuckDaniels87/hugin-icon

Hugin icons (hugin & ptbatcher)
Merge pull request #1267 from ChuckDaniels87/gtick-icon

Gtick icon.
Merge pull request #1260 from ChuckDaniels87/latexila-icon

Latexila own new icon, no symlink.