Fix loadbefore, soft, and normal dependencies with spaces. Fixes BUKKIT-5418

This change makes the lists of loadbefore, softdependency, and dependency
replace the spaces in the names with underscored to reflect the behavior
used with names.
Provide warnings for spaces in plugin names. Addresses BUKKIT-5419
Update data folder migration for spaces in plugin names. Fixes BUKKIT-5417

This change drops the previous plugin data folder migration based on the
plugin's file name, and adapts the migration to now instead consider
plugins that have spaces in their original name.
Update Bukkit to 1.7.5
[Bleeding] Plugin aliases should have higher priority than fallbacks. Fixes BUKKIT-5442
[Bleeding] Add direct addresses for command aliases.
Pulling all pending Bukkit-JavaDoc changes
POM Changes
Measure Timings Duration
Timings Paste Command
Enchanced Timings
Add PlayerItemDamageEvent
BungeeCord Support
Add Arrow API
Add Particle API
Define EntitySpawnEvent and SpawnerSpawnEvent

Defines EntitySpawnEvent and SpawnerSpawnEvent. Adds BUKKIT-267 and BUKKIT-1559
Entity Mount and Dismount Events
Update Depends

- All of these changes have been reviewed to be binary compatible and in general contract compatible with previous versions of the libraries.
InventoryClickEvent getClickedInventory

Add InventoryClickEvent.getClickedInventory. Adds BUKKIT-4495
Plugins currently have to do the logic themselves on the raw slot ID
in order to determine the inventory clicked. This provides the logic for plugins to
readily identify which inventory was clicked.
Added getAllSessionData() to the Conversation API.