Correcting order of queries in update sql + wrong alias char in joomla.sql

[infograf768]

See #8374

When updating, in 3.5.0-2015-07-01.sql, the alias collation to utf8mb4_bin has to be modified AFTER the table changes to utf8mb4_general_ci

To test: install a clean 3.4.5, then download https://github.com/joomla/joomla-cms/releases/download/3.5.0-beta/Joomla_3.5.0-beta-Beta-Update_Package.zip , unzip and replace ROOT/administrator/components/com_admin/sql/updates/mysql/3.5.0-2015-07-01.sql by the modified file. Zip again.
Then install the update via Extensions=>Update
There will be one issue to fix (related to user_profile) in Database Fix (see below)

Then in PHPMyadmin, export your database.
The alias definitions will now correctly be:

`alias` varchar(191) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin NOT NULL DEFAULT '',

The PR also corrects some alias varchar when installing a clean full 3.5.0. They should be 191 and not 255.

This PR does NOT solve the other issue reported in #8374
i.e.

Table 'mytable_user_profiles' does not have column 'profile_value' with type 'TEXT'. 

(From file 3.3.4-2014-08-03.sql.)

[Kubik-Rubik]

Tested successfully, thank you @infograf768! Merged on code review.