refactor(deps): move dependencies to variables DEPS_*, add missing

+ DEPS_CORE_INFRA: related to infra-strcuture
+ DEPS_CORE_CUSTOMER related to customer's node
+ DEPS_UTILS: useful to monitor
+ missing dependencies: apache2, sudo, unzip
feat(submodule): add mast-web as submodule a625eba..24e4242
fix(mk,git): use file:// protocol for relative mast-web
feat(apache): enable required modules

* php5
* rewrite
* vhost_alias
refactor(git): use either git or wget to fetch sources
refactor(git): provide pull source and correct context
refactor(git,perms): set file permissions after clone OR pull