Add Construction Mode (probably needs testing / fixing)

Perform some checks on team add

cosmetic disabling of clouds with sea edges and underwater theme

Teams widget now allows to add and remove teams (basic implementation, no checks performed, no colors, no hedgehogs)

Remove switching of hog's hat to chef. do it in draw instead.

Load and show local teams list

Revert hog tinting from rdb65298717da since it wasn't sufficiently complete for a release. More sprites need converting, and there's a slight bug in hog tinting, for away hogs with hats I believe.

- Implement getTeamsList (not tested) - Some small fixes

allow toggling ammo menu while NoTeamOrHH, as suggested by unC0Rr

Filter out garbage from themes list

find and add lua tests automagically

flib provides theme icons, qmlFrontend shows them

allow hogs to repeatedly enter portals placed on the ground

Themes model, also add some files I forgot to add previously

some unfinished stuff

Quick Game PoC

another small rendering tweak/fix

Getter and setter for seed

simplify {$IF that pas2c did not seem to understand

More refactoring: move PoC preview getting code into flib

also fix top/bottom and side-by-side rendering (got also broken in webgl branch)

Some refactoring

fix stereoscopic rendering leading to screen "running away to the left" since webgl merge (due to bug in webgl branch). reason was incomplete change of name/scope of variable stereoDepth -> cStereoDepth

- Get rid of engine's PathPrefix and UserPathPrefix - Some refactoring