These white boxes show the moves base DPS after STAB but before factoring in battle specific factors like the Pokemon's Attack, Defense and defending Pokemon's type.
These pink text boxes show the Damage per Energy (DPE) for charge moves. In many cases, this is more important than the DPS for a charge move. See this discussion on why DPE is so important for charge moves.
These bars have a maximum equal to the maximum observed for each stat across all Pokemon so as to provide a comparison of the Pokemon's stats to the most extreme case for each stat. E.g. the Attack stat for each Pokemon is compared to maximum of 426 for Mewtwo Mega Y.
For all Pokemon yet to be released in Pokemon Go, the Pokedex can still show their stats using the formulas identified to convert main series stats to Pokemon Go stats:
Too see how these stats can be used to your advantage in battle, check out the Beste Aanvallers and Beste Verdedigers tools.
If you like Poke Assistant and the free services it provides, the best thing you can do to give back is to recommend it: