* In some cases, it was impossible to implement a technology or set its
research priority, due to the JS click handler exiting with a "false"
return value.
* Added legacyworlds-server-beans-technologies Maven module, including
the player-level DAO and controller.
* Added session classes to carry technology information, modified web
client session façade accordingly
* Various changes to common UI elements (forms, lists, etc...) so the
start and end of some element can be drawn separately
* Added controller, templates and JavaScript for research page
