Fix filter sanitizing
Fix textures aligment problems.
Some other tweaks.
Remove trailing space
Fix the bug clearing other than default crafting methods.
Allow crafting from the craft guide.
Fix incorrect background colors over inventory slots

caused by BlockMen's/kahrl's inventory #hexcolor patch
( https://github.com/minetest/minetest/commit/25edae00ea1d5a9af4a6599fc7c200bb810fbd49 )
Give a stack's maximum, not 99
Check formname in on_receive_fields
Remove technic textures
Localize a variable
Combine some concatenations
Allow Lua regexs in search, and check for bad ones
Allow searching for groups.

Also make "group buttons" apply the filter to that group.
Remove trailing whitespace
Remove unnecessary recipe table copying
Icons for on/off switch and waypoints button.
Remove text from on/off switch icons
Look for recipes under an item's aliases

get_all_craft_recipes() returns the recipes that were registered under the
specified name, so asking about an item's canonical name won't see recipes
registered under an alias, and vice versa.  Several mods register recipes
under aliases, so the craft guide was missing that handful of recipes.
To work around it, invert the aliases table and ask explicitly about
each alias.
Update README
Add .gitignore