Continental supplies: Update pickhammer icon

Massive Continental supplies update List of changes: * Invulnerability protects from sabotage damage * Sabotage kills hog instantly when health reaches 0 * Reliably prevent using of Lonely Cries and baseball bat specials when usage not allowed * Don't explode Anno 1302 and Medicine if drowning * Don't play “Missed” and “Laugh” taunt when those don't make sense * Major rewrite of ALL strings for better usability * Add custom weapon tooltips * Major refactoring * Improve audiovisual effects * Show message when hog receives new continent ammo * Sabotaged hedgehogs also emit smoke when it's not their turn * Can switch continent in reverse order with [Precise]+[Switch] * Fix retreat timer not turning red for some weapons

Updated Continental supplies Noticable changes: * Selection of continent is now before a turn * Australia and Antarctica will have new moddable weapons * All continents have different starting healths per hog

Call GetNext twice as many times to distribute seed across the whole buffer even for single byte seeds

real droplet fix - default density is fine - also add back in the underwater bullet trails

Minor improvements in tutorial mission texts to make stuff clearer

Update German translation for previous English typo fixes

Fix a couple of English typos

Fix more German typos in Hedgewars files

Fix a couple of German typos in de.lua