Experience bar and loading

[brunomenezes66]

Two problems.One of them is the experience bar which I think has been already fixed in a pull request.
It heppenes to me that I remained at level 4 for a lot of time and then passed to level 5 almos full bar.
The oder problem is loading the map info after doing something like interacting with a poke stop or catching a Pokemon.It takes like ten seconds for me to load again all the pokestops and pokemons and I think you could make some kind of temp file or cache to store that,in order to reduce load times and data usage.

[br1luca]

#297

[taras-dashkevych]

#229