Working on error.jsp to prevent users planting a seed before plowing the plot
Merge origin/master
ERROR_SEED_NOT_AVAILABLE and ERROR_PLOT_NOT_PLOWED added: users must plow a plot before planting. For a type of seed, users must have greater than 0 number of seeds to plant this type of seed.
Merge origin/master

Conflicts:
	src/java/plantgame/controllers/GardenServlet.java