Minor tweaks
This hack for the collision map was a terrible idea

I'm committing these changes before undoing these, and coding it properly.
Switched the hack for the bitset

I've also added acessors and mutators to the Region and RegionPagerBase
classes.
Solid data is moving from the server to the client, read more

The APIs have access to the solid data, and I fixed a bug: Basically, the
template parameter for std::bitset  expects an integer representing the
number of bits to hold, but I initially misread it as the number of bytes.
This has been corrected.

I've also added a sandy beach to the generated island. I'm tempted to
start working on some simple generators soon.
Merge branch 'collision' into develop, read more

Began working on the collision system. Currently, the collision data which
is set server-side is transfered to the client, and stored in the Region
class. It's incomplete, but it's going well.