adds WikkaInstallFlag to errors.php
adds method interrupt_if_install_required to WikkaWebService and unit test
update wikka.php to include install interrupt; stubs out InstallHandler
completes intro stage for InstallHandler
sets version to 2.0 to ease installer dev
updates template to use Bootstrap 3 styling
adds override stylesheet for install
cleans up InstallHandler intro stage; adds permission warning
adds database section to InstallHandler form
adds helper function build_input_form_group to InstallHandler and refactors stage states
adds migrations file for install process
adds migrations through 1.1.6.0
stubs out WikkaMigrator class and unit tests
sets up database with v1.0 schema in WikkaMigratorTest to test migrations
fills out WikkaMigrator run_migrations method and adds test
adds migrations up to 1.1.6.7
completes WikkaMigrator run_db_migrations method and test
completes WikkaMigrator run_command_migrations method and test
fixes a couple minor issues with testing
adds migration for 1.2; adds backup_file method to WikkaMigrator class; new tests